A perfect great news thats going to cheer up the developers is the biggest repository system GitHub has launched Unlimited Repositories + Unlimited Collaborators on private repos for the Free Plan users.
GitHub previously had a limited number of collaborators on private repositories , while now suddenly they have announced to provide unlimited collaborators .
Also they have significantly reduced the prices of the plans.
You may have a look at the latest price plans : https://github.com/pricing

Well , the only limit would be the 500 MB limit , and 2000 actions. Which is still not too bad , keeping in view that its going to help thousands of small scale developers.
Its a great step GitHub . Keep it up !