
1. LeechBlock NGTop pick
Best for: People who want free, fine-grained limits on distracting sites inside their browser
59.6
score / 100
Why switch from SelfControl
Free open-source browser extension with time limits and schedules, on any OS with Firefox or Chrome.
Pros
- Free and open source
- Time limits and schedules per group of sites, up to 30 groups
- Works in Firefox and all major Chromium browsers
- Wildcards and exceptions for precise blocklists
Cons
- Only blocks inside the browser it's installed in
- Can't block desktop apps or work across devices
- Easier to bypass than system-level blockers
How this score is calculated
0 counted reviews, 0 up and 0 down votes. Full formula
Verified facts
4 of 4 verified- Browsers
- Firefox, Chrome, Edge, Chromium browsers
- Checked Nov 1, 2026proginosko.com(opens source in a new tab)