Saucelabs
Testrail
Test project
Bitrise
Applitools
What they provide:
- All of them in my opinion have done a great job at giving back to the community and supporting it.
- Amplify the people in the community by giving them a platform
What else can they do:
- Support open source projects from the community
- Free credits to testers who are just starting out and who could use a helping hand