https://pecl.php.net/package-info.php?package=redis&version=3.1.4RC1
PECL :: Package :: redis 3.1.4RC1
peclpackageredis
https://test.python.org/downloads/release/python-374rc1/
Python Release Python 3.7.4rc1 | Python.org
The official home of the Python Programming Language
pythonrelease
https://www.eclipse.org/lists/eclipse-dev/msg08203.html
[eclipse-dev] Eclipse 3.4RC1 now available
eclipsedevavailable