The first open-source design and prototyping platform meant for domain teams.

A browser-based design tool that is free for individual starters and students. It is currently the most popular alternative to Sketch.

Sketch moved to a subscription and "Mac-only" license model several years ago. Legitimate access can be found directly through the Official Sketch Website .

These files can install "backdoors" that allow hackers to access your webcam or monitor your keystrokes. Official Sketch Information

If the cost of Sketch is a barrier, there are several industry-standard alternatives that offer robust free tiers: