New ask Hacker News story: Ask HN: Which project does not have any good Open Source alternatives?

Ask HN: Which project does not have any good Open Source alternatives?
2 by safwan | 3 comments on Hacker News.
Open Source is changing the tech industry. But there are still a lot of space where the closed source proprietary software is the only player. Can you comment some of the space? So a person who is thinking about creating a new open source project can get the idea and start making a alternative?