Topcoder might be a bit more popular than Umbrello. We know about 5 links to it since March 2021 and only 5 links to Umbrello. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
Some tools are even available to go the other way and generate UML from code. Umbrello for example. Source: over 1 year ago
This was years ago so I honestly don't remember well, but after some brief googling this tool looks familiar https://umbrello.kde.org/. Source: over 2 years ago
The one time I was forced into making a UML diagram I used Umbrello from KDE: Https://umbrello.kde.org/. Source: over 2 years ago
For UML, I use Umbrello. The biggest advantage is that it can generate Ada code from UML class diagrams. It isn't a perfect code, but pretty good. :). Source: over 2 years ago
Dynamic Draw is portable and runs on Windows. Caligra, Diagramo or Umbrello for Linux. Source: about 3 years ago
Leetcode.com for problem solving practice. Do basics first before jumping into this one. Similar thing you can do at topcoder.com for trying to code with a timer. Great for problem solving practice. Source: about 1 year ago
I know topcoder.com does competitive programming for $$, I haven't done it myself though so I'm not entirely sure how it works. Source: about 1 year ago
One thing I noticed is topcoder.com is in "Advanced" and I'm not sure but, how is Top Coder any more advanced than others? Source: almost 2 years ago
Usually, I go to hackerrank.com or topcoder.com to choose the easiest challenge and I do it. In that way, you can compare your solution with other ones and get better. Source: over 2 years ago
Some, like Hackerrank.com and topcoder.com can connect you to employers once you get good. Source: over 2 years ago
draw.io - Online diagramming application
LeetCode - Practice and level up your development skills and prepare for technical interviews.
LucidChart - LucidChart is the missing link in online productivity suites. LucidChart allows users to create, collaborate on, and publish attractive flowcharts and other diagrams from a web browser.
HackerRank - HackerRank is a platform that allows companies to conduct interviews remotely to hire developers and for technical assessment purposes.
PlantUML - PlantUML is an open-source tool that uses simple textual descriptions to draw UML diagrams.
Codechef - CodeChef is a not-for-profit educational initiative by Directi, an Indian software company. It is a global programming community that fosters learning and friendly competition, built on top of the world’s largest competitive programming platform.