Free / Open-sourceAI sidebar and browser agent for reading, writing and research
Free / Open-sourceAI sidebar and browser agent for reading, writing and research
Block Enter records 0 monthly visits with — month-over-month growth and Free pricing. Focus AI records 7,002 monthly visits with -16.6% growth and Paid pricing.

Stop accidental sends in ChatGPT, Gemini, Claude and Perplexity
| Dimension / Metric | ![]() | |
|---|---|---|
| Official Domain | chromewebstore.google.com | getfocusai.com |
| Pricing Model | Free | Paid |
| Monthly Visits | 0 (0) | 7K (7,002) |
| MoM Traffic Delta | 0 (—) | -1.4K (-16.6%) |
| Primary Market & Share | 🌐 Global (—) | 🇬🇧 United Kingdom (39.1%) |
| Direct Visits / mo | 0 | 2.77K |
| User Rating | 4.2 | 4.3 |
| Supported Platforms | Browser Extension | Website |

Stop accidental sends in ChatGPT, Gemini, Claude and Perplexity
Pressing Enter inside a supported AI chat box inserts a line break instead of firing the message off to the model.
Deliberate submission stays available through the modifier-key shortcut, so nothing about your normal workflow is lost.
Works on ChatGPT, Google Gemini, Claude and Perplexity AI, with the supported-service list refreshed as new chat UIs launch.
Configure once and the behaviour follows you between tabs and signed-in Chrome profiles.
The Chrome website blocker that judges every page against your task
The extension reads each page and judges it against the goal you typed, so work-related YouTube or Docs stays available while feeds and Shorts are refused.
There is no one-click off switch. Ending a session early means typing a full surrender sentence by hand, letter by letter, with no pasting allowed.
Pick standard filtering, the Quit Wall, or a nuclear mode with no exit at all, and escalate on days when your attention is fighting back.
Every time you choose work over the feed the moment is stamped and timed, and banked minutes build into a weekly record of reclaimed time.
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