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one sec alternatives · Focus

Open-source alternatives to one sec

one sec is not described as open source on its own site. 7 of the 65 other focus apps in this directory are open source, according to their own sites.

one sec has a free plan. Paid plans start at $3.99 / month, or $19.99 / year (US web store price). All of them are free or have a free plan.

7 tools · Listings checked up to Oct 9, 2026 · Where the facts come from

How each one differs from one sec

  1. SelfControl

    Free Mac app that blocks distracting sites until a timer ends

    • SelfControl is free. one sec starts at $3.99 / month, or $19.99 / year (US web store price).
    • Only one sec lists iOS and Android apps.
    • Only one sec lists a browser extension.
    • SelfControl is open source, according to its own site.
    SelfControl pricing and details

  2. LeechBlock NG

    Free browser extension that blocks time-wasting sites on a schedule

    • LeechBlock NG is free. one sec starts at $3.99 / month, or $19.99 / year (US web store price).
    • Only one sec lists iOS, Android and macOS apps.
    • LeechBlock NG is open source, according to its own site.
    • one sec can be bought with a one-time purchase.
    LeechBlock NG pricing and details

  3. Goodtime

    Minimalist open-source Pomodoro timer for Android

    • Goodtime starts at $6.99 one-time in-app purchase (Google Play, US). one sec starts at $3.99 / month, or $19.99 / year (US web store price).
    • Only one sec lists a macOS app.
    • Only one sec lists a browser extension.
    • Goodtime is open source, according to its own site.
    Goodtime pricing and details

  4. Foqos

    Free open-source iPhone app blocker using NFC tags or QR codes

    • Foqos is free. one sec starts at $3.99 / month, or $19.99 / year (US web store price).
    • Only one sec lists an Android app.
    • Only one sec lists a browser extension.
    • Foqos is open source, according to its own site.
    Foqos pricing and details

  5. TomatoBar

    Free open-source Pomodoro timer for the Mac menu bar

    • TomatoBar is free. one sec starts at $3.99 / month, or $19.99 / year (US web store price).
    • Only one sec lists iOS and Android apps.
    • Only one sec lists a browser extension.
    • TomatoBar is open source, according to its own site.
    TomatoBar pricing and details

  6. Focus Timer

    Free Pomodoro timer for Linux, formerly GNOME Pomodoro

    • Focus Timer is free. one sec starts at $3.99 / month, or $19.99 / year (US web store price).
    • Only Focus Timer lists a Linux app.
    • Only one sec lists iOS, Android and macOS apps.
    • Only one sec lists a browser extension.
    Focus Timer pricing and details

  7. Blanket

    Free open-source ambient sound mixer for the Linux desktop

    • Blanket is free. one sec starts at $3.99 / month, or $19.99 / year (US web store price).
    • Only Blanket lists a Linux app.
    • Only one sec lists iOS, Android and macOS apps.
    • Only one sec lists a browser extension.
    Blanket pricing and details

Common questions

Is there an open-source alternative to one sec?

Yes. SelfControl, LeechBlock NG, Goodtime, Foqos, TomatoBar, Focus Timer and Blanket are open source, according to their own sites.

Is one sec open source?

one sec is not described as open source on its own site. The listing was checked on Oct 5, 2026 against the pages it cites.

When was this checked?

Each listing shows its own date. On this page they run from Oct 5, 2026 to Oct 9, 2026. Vendors change prices and plans without notice, so confirm on their site before you buy.

This page is built from the listings. A tool is here because its listing says so, and the order is how close each is to one sec: the alternatives its listing names first, then the tools that share the most features with it.