Something else I'd love to see is a server that's as easy as an iPad. Sandstorm is doing some work in this area, although I'm not convinced that the end result will be great. I want a server I can connect to, install apps from an app store as easily as on an iPad, configure as easily as an iPad, etc. Linux/FreeBSD/etc will always be needed for high performance websites and intensive or innovative computing needs but 95% of people just want to host a website or some email. I should be able to log on, go to the App Store, download the Minecraft server and be playing my game within minutes (with a nice GUI for configuration). Don't believe this is needed? The existence of SaaS is proof that it is - software is too hard and too complicated to install, configure and keep updated on your own server.
ReactOS is still far behind, although what they have accomplished so far is amazing.
Also an open-source virus scanner would be nice (besides ClamAV which if I recall correctly doesn't support real-time scanning).
And I would love to see an alternative to Android and iOS take off into the mainstream.
I think after seeing how Microsoft has a big lock in with businesses offering FOSS solutions for like Linux or OSX would help some migrate away from Windows. Most Business and Legal apps are Windows only and commercial.
But there was an app called CMSOpen and was bought out and called Solution Six. I can't find their website and the company has been bought and sold many times. I don't know what it is called now, but a lot of law firms used it and it was designed by accountants. I worked for a law firm and we modified the database so it was faster and worked better. I wrote some ASP web apps to use their database and I think the law firm licensed them. I got too sick to work in 2001 and was fired. But I have 4 and a half years of knowledge of working on such an app.
The problem is that it uses Office and MS-SQL Server, and even needs Sharepoint server. It is so tied to Windows and Microsoft technology that it costs a lot to use and smaller law firms cannot afford it.
But the main thing with any law firm is billing time to a client and matter number on a timesheet and searching for database records based on client name and number and matter name and number. As well as billing attorney and other stuff.
This might be a really fun open source project to start. Hmmm.
an alternative to open design alliance CAD DWG Autocad
However, I do believe in open source if the soul purpose was to open source to begin with, just as long as people aren't naively jumping on the bandwagon after failing to gain traction or sales.
Perhaps a little too black and the white thinking above but in my own experience, open sourcing your product seems to attract freeloaders, your conversion falls, someone that would have gladly paid walks, leaving money on the table.
And even those who are, there's plenty of successful consultancies based around open source software.
I've seen a CRM company that sold their software for 100k/year but the actual software license is only like 20% or less and the remaining 80% was training and support.
So in this case letting go the license fee in return for marketing to adopters who now will turn to you for help.