I wanted to buy a micro SAAS because I have a hard time getting startup ideas at the moment. The first criteria was to find a micro SAAS company that solves a problem in my life. Looking at the listings on MicroAcquire, a lot of them didn't meet this criteria. Some products seemed pretty useless. For example, who would need to send SMS messages from Google Sheet? Other websites such as Transferslot and ... Source: about 1 year ago

You might find the following useful : Visual Understanding Environment - https://vue.tufts.edu/ Came across this in another thread recently - https://quarto.org/. - Source: Hacker News / 6 months ago

I use this for drawing "graphs" in the formal math sense like you're looking for: https://vue.tufts.edu/. Source: about 2 years ago

There are a number of free and commercial softwares developed for diagrams, flowcharts, and mind mapping with similar features. I haven't used them in a while, but in the past I've liked yEd and VUE. Both are free and support multiple platforms. Source: over 2 years ago

The site is working for me ( https://vue.tufts.edu ) as is the download, so it was probably a temporary glitch. Source: almost 3 years ago

I think your best bet may be Visual Understanding Environment (VUE). I can't say for sure if it will store or play videos but they make a big deal about "digital media" on their website. Source: almost 3 years ago