https://developers.meta.com/horizon/reference/voice/v67/class_meta_voice_logging_log_sink/
LogSink Class | voice: Voice SDK v67 | Meta Horizon OS Developers
meta horizon osvoice sdkclassdevelopers
https://developers.meta.com/horizon/reference/voice/v76/enum_meta_voice_voice_audio_input_state/
VoiceAudioInputState Enum | voice: Voice SDK v76 | Meta Horizon OS Developers
meta horizon osvoice sdkenumdevelopers
https://developers.meta.com/horizon/reference/voice/v76/class_meta_wit_ai_windows_wit_parameter_filter/
WitParameterFilter Class | voice: Voice SDK v76 | Meta Horizon OS Developers
meta horizon osvoice sdkclassdevelopers
https://developers.meta.com/horizon/reference/voice/v69/interface_meta_voice_logging_i_logger_registry/
ILoggerRegistry Interface | voice: Voice SDK v69 | Meta Horizon OS Developers
meta horizon osvoice sdkinterfacedevelopers
https://developers.meta.com/horizon/reference/voice/v77/class_meta_wit_ai_editor_utilities_serialized_property_extensions/
SerializedPropertyExtensions Class | voice: Voice SDK v77 | Meta Horizon OS Developers
meta horizon osvoice sdkclassdevelopers
https://developers.meta.com/horizon/reference/voice/v71/function_meta_voice_audio_audio_clip_stream_delegate/
AudioClipStreamDelegate Function | voice: Voice SDK v71 | Meta Horizon OS Developers
meta horizon osvoice sdkfunctiondevelopers
https://developers.meta.com/horizon/reference/voice/v74/class_oculus_voice_dictation_bindings_android_dictation_listener_binding/
DictationListenerBinding Class | voice: Voice SDK v74 | Meta Horizon OS Developers
meta horizon osvoice sdkclassdevelopers
https://developers.meta.com/horizon/reference/voice/v69/class_meta_voice_hub_content_samples_page/
SamplesPage Class | voice: Voice SDK v69 | Meta Horizon OS Developers
meta horizon osvoice sdkclassdevelopers
https://developers.meta.com/horizon/reference/voice/v76/class_meta_wit_ai_windows_wit_configuration_window/
WitConfigurationWindow Class | voice: Voice SDK v76 | Meta Horizon OS Developers
meta horizon osvoice sdkclassdevelopers
https://developers.meta.com/horizon/reference/voice/v77/class_meta_wit_ai_data_configuration_tabs_wit_configuration_intents_tab/
WitConfigurationIntentsTab Class | voice: Voice SDK v77 | Meta Horizon OS Developers
meta horizon osvoice sdkclassdevelopers
https://developers.meta.com/horizon/reference/voice/v69/enum_meta_voice_n_layer_stereo_mode/
StereoMode Enum | voice: Voice SDK v69 | Meta Horizon OS Developers
meta horizon osvoice sdkstereomodeenumdevelopers
https://developers.meta.com/horizon/reference/voice/v78/interface_meta_voice_logging_i_logger_registry/
ILoggerRegistry Interface | voice: Voice SDK v78 | Meta Horizon OS Developers
meta horizon osvoice sdkinterfacedevelopers
https://developers.meta.com/horizon/reference/voice/v74/interface_meta_wit_ai_i_wit_request_endpoint_info/
IWitRequestEndpointInfo Interface | voice: Voice SDK v74 | Meta Horizon OS Developers
meta horizon osvoice sdkinterfacedevelopers
https://developers.meta.com/horizon/reference/voice/v67/class_meta_wit_ai_service_references_dictation_service_audio_event_reference/
DictationServiceAudioEventReference Class | voice: Voice SDK v67 | Meta Horizon OS Developers
meta horizon osvoice sdkclassdevelopers
https://developers.meta.com/horizon/reference/voice/v76/class_meta_wit_ai_windows_wit_intent_property_drawer/
WitIntentPropertyDrawer Class | voice: Voice SDK v76 | Meta Horizon OS Developers
meta horizon osvoice sdkclassdevelopers
https://communityforums.atmeta.com/discussions/Questions_Discussions/voice-sdk-microphone-only-starts-correctly-first-time/1373050
Voice SDK microphone only starts correctly first time | Meta Community Forums - 1373050
I'm using the AppDictationExperience component from the Voice SDK in Unity and am trying to play a build on the Quest 2. When I call Activate on the... -...
voice sdk
https://developers.meta.com/horizon/reference/voice/v69/class_meta_net_native_web_socket_web_socket_unexpected_exception/
WebSocketUnexpectedException Class | voice: Voice SDK v69 | Meta Horizon OS Developers
meta horizon osvoice sdkclassdevelopers
https://developers.meta.com/horizon/reference/voice/v77/class_meta_wit_ai_t_t_s_utilities_t_t_s_speaker_events/
TTSSpeakerEvents Class | voice: Voice SDK v77 | Meta Horizon OS Developers
meta horizon osvoice sdkclassdevelopers
https://developers.meta.com/horizon/reference/voice/v77/struct_meta_wit_ai_data_info_wit_export_info/
WitExportInfo Struct | voice: Voice SDK v77 | Meta Horizon OS Developers
meta horizon osvoice sdkstructdevelopers
https://developers.meta.com/horizon/reference/voice/v77/function_meta_voice_audio_audio_clip_stream_sample_delegate/
AudioClipStreamSampleDelegate Function | voice: Voice SDK v77 | Meta Horizon OS Developers
meta horizon osvoice sdkfunctiondevelopers
https://developers.meta.com/horizon/reference/voice/v67/class_meta_wit_ai_data_intents_wit_intent_data/
WitIntentData Class | voice: Voice SDK v67 | Meta Horizon OS Developers
meta horizon osvoice sdkclassdevelopers
https://developers.meta.com/horizon/reference/voice/v77/enum_meta_voice_unity_opus_num_channels/
NumChannels Enum | voice: Voice SDK v77 | Meta Horizon OS Developers
meta horizon osvoice sdkenumdevelopers
https://developers.meta.com/horizon/reference/voice/v78/class_meta_wit_ai_events_event_registry/
EventRegistry Class | voice: Voice SDK v78 | Meta Horizon OS Developers
meta horizon osvoice sdkclassdevelopers
https://developers.meta.com/horizon/reference/voice/v74/function_meta_voice_audio_audio_clip_stream_sample_delegate/
AudioClipStreamSampleDelegate Function | voice: Voice SDK v74 | Meta Horizon OS Developers
meta horizon osvoice sdkfunctiondevelopers
https://developers.meta.com/horizon/reference/voice/v85/interface_meta_conduit_i_conduit_dispatcher/
IConduitDispatcher Interface | voice: Voice SDK v85 | Meta Horizon OS Developers
meta horizon osvoice sdkinterfacedevelopers
https://developers.meta.com/horizon/reference/voice/v71/enum_meta_net_native_web_socket_web_socket_state/
WebSocketState Enum | voice: Voice SDK v71 | Meta Horizon OS Developers
meta horizon osvoice sdkwebsocketstateenumdevelopers
https://developers.meta.com/horizon/reference/voice/v71/class_meta_wit_ai_requests_text_stream_handler/
TextStreamHandler Class | voice: Voice SDK v71 | Meta Horizon OS Developers
meta horizon osvoice sdkclassdevelopers
https://developers.meta.com/horizon/reference/voice/v78/interface_oculus_voice_core_bindings_interfaces_i_connection/
IConnection Interface | voice: Voice SDK v78 | Meta Horizon OS Developers
meta horizon osvoice sdkiconnectioninterfacedevelopers
https://developers.meta.com/horizon/reference/voice/v77/enum_meta_wit_ai_callback_handlers_match_method/
MatchMethod Enum | voice: Voice SDK v77 | Meta Horizon OS Developers
meta horizon osvoice sdkenumdevelopers
https://developers.meta.com/horizon/reference/voice/v77/class_meta_wit_ai_t_t_s_utilities_t_t_s_speaker_clip_events/
TTSSpeakerClipEvents Class | voice: Voice SDK v77 | Meta Horizon OS Developers
meta horizon osvoice sdkclassdevelopers
https://developers.meta.com/horizon/reference/voice/v71/class_meta_wit_ai_utilities_dynamic_range_attribute/
DynamicRangeAttribute Class | voice: Voice SDK v71 | Meta Horizon OS Developers
meta horizon osvoice sdkclassdevelopers
https://developers.meta.com/horizon/reference/voice/v74/class_meta_wit_ai_task_utility/
TaskUtility Class | voice: Voice SDK v74 | Meta Horizon OS Developers
meta horizon osvoice sdkclassdevelopers
https://developers.meta.com/horizon/reference/voice/v77/class_meta_voice_n_l_p_request/
NLPRequest Class | voice: Voice SDK v77 | Meta Horizon OS Developers
meta horizon osvoice sdkclassdevelopers
https://developers.meta.com/horizon/reference/voice/v71/class_meta_wit_ai_voice_service/
VoiceService Class | voice: Voice SDK v71 | Meta Horizon OS Developers
meta horizon osvoice sdkclassdevelopers
https://developers.meta.com/horizon/reference/voice/v74/interface_oculus_voice_bindings_android_i_v_c_binding_events/
IVCBindingEvents Interface | voice: Voice SDK v74 | Meta Horizon OS Developers
meta horizon osvoice sdkinterfacedevelopers
https://www.nexconn.ai/
Nexconn | Real-Time Communication API & Chat, Voice SDK for Global Apps
Nexconn provides real-time chat and voice SDKs for mobile and web applications. Build scalable communication experiences with low-latency messaging, global...
real time communicationapi chatvoice sdk
https://developers.meta.com/horizon/reference/voice/v76/class_oculus_voice_dictation_bindings_android_dictation_listener_binding/
DictationListenerBinding Class | voice: Voice SDK v76 | Meta Horizon OS Developers
meta horizon osvoice sdkclassdevelopers
https://developers.meta.com/horizon/reference/voice/v78/interface_meta_wit_ai_t_t_s_interfaces_i_speaker_text_postprocessor/
ISpeakerTextPostprocessor Interface | voice: Voice SDK v78 | Meta Horizon OS Developers
meta horizon osvoice sdkinterfacedevelopers
https://developers.meta.com/horizon/reference/voice/v77/class_meta_voice_logging_log_category_attribute/
LogCategoryAttribute Class | voice: Voice SDK v77 | Meta Horizon OS Developers
meta horizon osvoice sdkclassdevelopers
https://developers.meta.com/horizon/reference/voice/v74/class_meta_wit_ai_windows_wit_property_drawer/
WitPropertyDrawer Class | voice: Voice SDK v74 | Meta Horizon OS Developers
meta horizon osvoice sdkclassdevelopers
https://developers.meta.com/horizon/reference/voice/v77/class_meta_wit_ai_wit_texts/
WitTexts Class | voice: Voice SDK v77 | Meta Horizon OS Developers
meta horizon osvoice sdkclassdevelopers
https://developers.meta.com/horizon/reference/voice/v74/enum_meta_wit_ai_t_t_s_wit_audio_type/
TTSWitAudioType Enum | voice: Voice SDK v74 | Meta Horizon OS Developers
meta horizon osvoice sdkenumdevelopers
https://developers.meta.com/horizon/reference/voice/v77/interface_meta_wit_ai_i_wit_runtime_config_provider/
IWitRuntimeConfigProvider Interface | voice: Voice SDK v77 | Meta Horizon OS Developers
meta horizon osvoice sdkinterfacedevelopers
https://developers.meta.com/horizon/reference/voice/v71/class_meta_conduit_list_extensions/
ListExtensions Class | voice: Voice SDK v71 | Meta Horizon OS Developers
meta horizon osvoice sdklistextensionsclassdevelopers
https://developers.meta.com/horizon/reference/voice/v69/interface_meta_voice_i_voice_request_results/
IVoiceRequestResults Interface | voice: Voice SDK v69 | Meta Horizon OS Developers
meta horizon osvoice sdkinterfacedevelopers
https://developers.meta.com/horizon/reference/voice/v78/enum_meta_voice_n_layer_mpeg_layer/
MpegLayer Enum | voice: Voice SDK v78 | Meta Horizon OS Developers
meta horizon osvoice sdkenumdevelopers
https://developers.meta.com/horizon/reference/voice/v76/class_meta_voice_audio_decoding_audio_decoder_mp3/
AudioDecoderMp3 Class | voice: Voice SDK v76 | Meta Horizon OS Developers
meta horizon osvoice sdkclassdevelopers
https://developers.meta.com/horizon/reference/voice/v74/class_oculus_voice_core_utilities_assistant_editor_utils/
AssistantEditorUtils Class | voice: Voice SDK v74 | Meta Horizon OS Developers
meta horizon osvoice sdkclassdevelopers
https://developers.meta.com/horizon/reference/voice/v69/class_meta_voice_v_s_d_k_hub_voice_s_d_k_hub/
VoiceSDKHub Class | voice: Voice SDK v69 | Meta Horizon OS Developers
meta horizon osvoice sdkclassdevelopers
https://developers.meta.com/horizon/reference/voice/v71/enum_meta_wit_ai_requests_wit_audio_request_option/
WitAudioRequestOption Enum | voice: Voice SDK v71 | Meta Horizon OS Developers
meta horizon osvoice sdkenumdevelopers
https://developers.meta.com/horizon/reference/voice/v69/enum_meta_wit_ai_data_info_wit_app_training_status/
WitAppTrainingStatus Enum | voice: Voice SDK v69 | Meta Horizon OS Developers
meta horizon osvoice sdkenumdevelopers
https://developers.meta.com/horizon/reference/voice/v71/class_meta_net_native_web_socket_web_socket_invalid_state_exception/
WebSocketInvalidStateException Class | voice: Voice SDK v71 | Meta Horizon OS Developers
meta horizon osvoice sdkclassdevelopers
https://developers.meta.com/horizon/reference/voice/v76/function_meta_wit_ai_requests_v_request_decode_delegate_t_value/
VRequestDecodeDelegate TValue Function | voice: Voice SDK v76 | Meta Horizon OS Developers
meta horizon osvoice sdktvaluefunctiondevelopers
https://developers.meta.com/horizon/reference/voice/v76/class_meta_wit_ai_utilities_caption_data/
CaptionData Class | voice: Voice SDK v76 | Meta Horizon OS Developers
meta horizon osvoice sdkclassdevelopers
https://developers.meta.com/horizon/reference/voice/v71/class_meta_wit_ai_validate_partial_intent/
ValidatePartialIntent Class | voice: Voice SDK v71 | Meta Horizon OS Developers
meta horizon osvoice sdkclassdevelopers
https://developers.meta.com/horizon/reference/voice/v74/enum_meta_voice_telemetry_utilities_runtime_telemetry_point/
RuntimeTelemetryPoint Enum | voice: Voice SDK v74 | Meta Horizon OS Developers
meta horizon osvoice sdkenumdevelopers
https://developers.meta.com/horizon/reference/voice/v78/class_meta_wit_ai_events_wit_sample_event/
WitSampleEvent Class | voice: Voice SDK v78 | Meta Horizon OS Developers
meta horizon osvoice sdkclassdevelopers
https://developers.meta.com/horizon/reference/voice/v77/interface_meta_voice_audio_i_audio_clip_provider/
IAudioClipProvider Interface | voice: Voice SDK v77 | Meta Horizon OS Developers
meta horizon osvoice sdkinterfacedevelopers
https://developers.meta.com/horizon/reference/voice/v78/enum_meta_voice_n_layer_stereo_mode/
StereoMode Enum | voice: Voice SDK v78 | Meta Horizon OS Developers
meta horizon osvoice sdkstereomodeenumdevelopers
https://developers.meta.com/horizon/reference/voice/v67/class_oculus_voice_dictation_inspectors_wit_dictation_runtime_config_drawer/
WitDictationRuntimeConfigDrawer Class | voice: Voice SDK v67 | Meta Horizon OS Developers
meta horizon osvoice sdkclassdevelopers
https://developers.meta.com/horizon/reference/voice/v78/interface_meta_wit_ai_i_wit_runtime_config_setter/
IWitRuntimeConfigSetter Interface | voice: Voice SDK v78 | Meta Horizon OS Developers
meta horizon osvoice sdkinterfacedevelopers
https://developers.meta.com/horizon/reference/voice/v77/interface_meta_wit_ai_interfaces_i_transcription_event_provider/
ITranscriptionEventProvider Interface | voice: Voice SDK v77 | Meta Horizon OS Developers
meta horizon osvoice sdkinterfacedevelopers
https://developers.meta.com/horizon/reference/voice/v77/class_oculus_voice_voice_s_d_k_constants/
VoiceSDKConstants Class | voice: Voice SDK v77 | Meta Horizon OS Developers
meta horizon osvoice sdkclassdevelopers
https://developers.meta.com/horizon/reference/voice/v77/class_meta_voice_n_layer_mpeg_frame_decoder/
MpegFrameDecoder Class | voice: Voice SDK v77 | Meta Horizon OS Developers
meta horizon osvoice sdkclassdevelopers
https://developers.meta.com/horizon/reference/voice/v74/enum_meta_voice_samples_shapes_conduit_color_name/
ColorName Enum | voice: Voice SDK v74 | Meta Horizon OS Developers
meta horizon osvoice sdkcolornameenumdevelopers
https://developers.meta.com/horizon/reference/voice/v71/function_meta_wit_ai_t_t_s_interfaces_t_t_s_event_sample_delegate/
TTSEventSampleDelegate Function | voice: Voice SDK v71 | Meta Horizon OS Developers
meta horizon osvoice sdkfunctiondevelopers
https://developers.meta.com/horizon/reference/voice/v69/class_meta_wit_ai_data_entities_dynamic_entity_provider/
DynamicEntityProvider Class | voice: Voice SDK v69 | Meta Horizon OS Developers
meta horizon osvoice sdkclassdevelopers
https://developers.meta.com/horizon/reference/voice/v71/interface_meta_wit_ai_t_t_s_interfaces_i_t_t_s_voice_provider/
ITTSVoiceProvider Interface | voice: Voice SDK v71 | Meta Horizon OS Developers
meta horizon osvoice sdkinterfacedevelopers
https://developers.meta.com/horizon/reference/voice/v74/class_meta_wit_ai_windows_wit_window_utility/
WitWindowUtility Class | voice: Voice SDK v74 | Meta Horizon OS Developers
meta horizon osvoice sdkclassdevelopers
https://developers.meta.com/horizon/reference/voice/v77/class_meta_wit_ai_json_color_converter/
ColorConverter Class | voice: Voice SDK v77 | Meta Horizon OS Developers
meta horizon osvoice sdkclassdevelopers
https://developers.meta.com/horizon/reference/voice/v67/class_meta_voice_logging_log_sink/
LogSink Class | voice: Voice SDK v67 | Meta Horizon OS Developers
meta horizon osvoice sdkclassdevelopers
https://developers.meta.com/horizon/reference/voice/v76/enum_meta_voice_voice_audio_input_state/
VoiceAudioInputState Enum | voice: Voice SDK v76 | Meta Horizon OS Developers
meta horizon osvoice sdkenumdevelopers
https://utdsoftware.com/
UTD — Voice & Video Chat SDK, Live Streaming API & App Marketplace
Build voice chat rooms, video calls and live streaming apps with UTD — a far cheaper alternative to ZEGOCLOUD and Agora. Ready white-label apps with source...
live streaming apivoice videochat sdkutd
https://developers.meta.com/horizon/reference/voice/v76/class_meta_wit_ai_windows_wit_parameter_filter/
WitParameterFilter Class | voice: Voice SDK v76 | Meta Horizon OS Developers
meta horizon osvoice sdkclassdevelopers
https://docs.syllable.ai/api-reference/voice_groups/list-voice-groups
List Voice Groups - Syllable SDK
listvoicegroupssyllablesdk
https://developers.meta.com/horizon/reference/voice/v69/interface_meta_voice_logging_i_logger_registry/
ILoggerRegistry Interface | voice: Voice SDK v69 | Meta Horizon OS Developers
meta horizon osvoice sdkinterfacedevelopers
https://developers.meta.com/horizon/reference/voice/v77/class_meta_wit_ai_editor_utilities_serialized_property_extensions/
SerializedPropertyExtensions Class | voice: Voice SDK v77 | Meta Horizon OS Developers
meta horizon osvoice sdkclassdevelopers
https://developers.meta.com/horizon/reference/voice/v71/function_meta_voice_audio_audio_clip_stream_delegate/
AudioClipStreamDelegate Function | voice: Voice SDK v71 | Meta Horizon OS Developers
meta horizon osvoice sdkfunctiondevelopers
https://developers.meta.com/horizon/reference/voice/v74/class_oculus_voice_dictation_bindings_android_dictation_listener_binding/
DictationListenerBinding Class | voice: Voice SDK v74 | Meta Horizon OS Developers
meta horizon osvoice sdkclassdevelopers
https://doc.vivoka.com/vdk/6.2.0/sdk-specifics-for-voice-recognition-continuous
SDK specifics for Voice Recognition (Continuous)
SDK VSDK-CSDK Language count 43 Language list arb-SA bul-BG yue-CN yue-HK ces-CZ dan-DK nld-NL eng-CN eng-AU eng-GB eng-IN eng-JP eng-KR eng-MY eng...
voice recognitionsdkspecificscontinuous
https://developers.meta.com/horizon/reference/voice/v69/class_meta_voice_hub_content_samples_page/
SamplesPage Class | voice: Voice SDK v69 | Meta Horizon OS Developers
meta horizon osvoice sdkclassdevelopers
https://developers.meta.com/horizon/reference/voice/v76/class_meta_wit_ai_windows_wit_configuration_window/
WitConfigurationWindow Class | voice: Voice SDK v76 | Meta Horizon OS Developers
meta horizon osvoice sdkclassdevelopers
https://centerbeam.ai/
Nova SDK — Voice Agents for Field, Brand, and Service
Nova is the real-time voice SDK for hands-free industrial work, branded marketing agents, and always-on customer service — one platform, any context.
voice agentsnovasdkfieldbrand
https://developers.meta.com/horizon/reference/voice/v77/class_meta_wit_ai_data_configuration_tabs_wit_configuration_intents_tab/
WitConfigurationIntentsTab Class | voice: Voice SDK v77 | Meta Horizon OS Developers
meta horizon osvoice sdkclassdevelopers
https://developers.meta.com/horizon/reference/voice/v69/enum_meta_voice_n_layer_stereo_mode/
StereoMode Enum | voice: Voice SDK v69 | Meta Horizon OS Developers
meta horizon osvoice sdkstereomodeenumdevelopers
https://developers.meta.com/horizon/reference/voice/v78/interface_meta_voice_logging_i_logger_registry/
ILoggerRegistry Interface | voice: Voice SDK v78 | Meta Horizon OS Developers
meta horizon osvoice sdkinterfacedevelopers
https://developers.meta.com/horizon/reference/voice/v74/interface_meta_wit_ai_i_wit_request_endpoint_info/
IWitRequestEndpointInfo Interface | voice: Voice SDK v74 | Meta Horizon OS Developers
meta horizon osvoice sdkinterfacedevelopers
https://developers.meta.com/horizon/reference/voice/v67/class_meta_wit_ai_service_references_dictation_service_audio_event_reference/
DictationServiceAudioEventReference Class | voice: Voice SDK v67 | Meta Horizon OS Developers
meta horizon osvoice sdkclassdevelopers
https://doc.vivoka.com/vdk/5.6.0/providers-specifics-for-grammar-editor
SDK specifics for Voice Recognition (Grammar-based)
SDK VSDK-VASR VSDK-CSDK VSDK-TNL Language count 6 41 7 Language list deu-DE eng-US fra-FR ita-IT spa-ES nld-NL afb-APG bul-BG ces-CZ cmn-CN cmn-TW ...
voice recognitionsdkspecificsgrammarbased
https://developers.meta.com/horizon/reference/voice/v76/class_meta_wit_ai_windows_wit_intent_property_drawer/
WitIntentPropertyDrawer Class | voice: Voice SDK v76 | Meta Horizon OS Developers
meta horizon osvoice sdkclassdevelopers
https://pitchmeld.ing/
Voice transformation SDK | Pitchmeld
Pitchmeld is a high-quality audio SDK for voice transformation, including pitch shifting, autotune, time and timbre scaling. Running locally in Python, C/C++,...
voicetransformationsdk
https://communityforums.atmeta.com/discussions/Questions_Discussions/voice-sdk-microphone-only-starts-correctly-first-time/1373050
Voice SDK microphone only starts correctly first time | Meta Community Forums - 1373050
I'm using the AppDictationExperience component from the Voice SDK in Unity and am trying to play a build on the Quest 2. When I call Activate on the... -...
voice sdk
https://developers.meta.com/horizon/reference/voice/v69/class_meta_net_native_web_socket_web_socket_unexpected_exception/
WebSocketUnexpectedException Class | voice: Voice SDK v69 | Meta Horizon OS Developers
meta horizon osvoice sdkclassdevelopers