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SiteKeeper

A LeechBlock NG alternative with a time dashboard

LeechBlock NG is free, open source (MPL-2.0), and the more powerful rule engine: about 100,000 users on the Chrome Web Store (October 2026), 4.9★ from 1.6K ratings, version 1.7.3 (updated August 5, 2026), by James Anderson. You get up to 30 block sets, time periods, limits, lockdown, and Firefox as well as Chrome. SiteKeeper does not try to out-rule it. SiteKeeper records the active tab, tags sites, scores the day from 0 to 100, and lets you set a daily and a weekly cap per site without building a block set.

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TL;DR

Choose LeechBlock NG if you want a free, open-source blocker with fine rules: lockdown, a password or access code, delays, wildcards, exceptions, keywords, and Firefox. Choose SiteKeeper if you want an automatic Chrome time log, path analysis, and a productivity score, and you are fine with a soft cap you can extend. LeechBlock is the stronger blocker. SiteKeeper is the clearer record of where the time went.

Tools people compare with LeechBlock NG

Best for seeing time, then capping a site

SiteKeeper

Automatic active-tab tracking, tags, a 0–100 score, and per-site daily and weekly caps. Chrome only. The block is soft.

Best for a free Nuclear lock

StayFocusd

about 700,000 users on the Chrome Web Store (October 2026). Nuclear Option cannot be canceled in the extension. Chrome and Edge. Free.

Best for schedules plus a phone app

BlockSite

about 1,000,000 users on the Chrome Web Store (October 2026). Schedule Mode, password protection, and sync to Android and iOS.

Best hard lock on Windows and Mac

Cold Turkey

about 200,000 users on the Chrome Web Store (October 2026) on the extension, which works only with the desktop app. Not on Linux, ChromeOS, or mobile. One-time Pro license; see their site for the price.

SiteKeeper vs LeechBlock NG

  • Price

    SiteKeeper
    Pro $4.99/mo or $24.99/yr. Lifetime $29.99 once. Free tier included.
    LeechBlock NG
    Free and open source (MPL-2.0)

  • Source and data disclosure

    SiteKeeper
    Privacy-first; we never sell or share your data.
    LeechBlock NG
    Open source (MPL-2.0). Developer discloses it will not collect or use your data. About 1,000+ GitHub stars.

  • Browsers

    SiteKeeper
    Chrome only
    LeechBlock NG
    Firefox, Chrome, Edge, Brave, Opera, and Vivaldi

  • How you set a limit

    SiteKeeper
    Per site: a daily cap, a weekly cap, and optional time windows
    LeechBlock NG
    Up to 30 block sets. Fixed periods, a time limit such as 10 minutes every hour, or both.

  • Lockdown, password, delay

    SiteKeeper
    None. Soft block only.
    LeechBlock NG
    Lockdown for a duration, password or random access code, delaying countdown, password to open a blocked site

  • Wildcards, exceptions, keywords

    SiteKeeper
    No allowlist, no keyword block
    LeechBlock NG
    Wildcards, exceptions, and keyword block or allow

  • Automatic time dashboard

    SiteKeeper
    Yes. Charts, a 0–100 score, tags, and a weekly report that can open on Sunday. No email.
    LeechBlock NG
    A time dashboard is not in the feature list we checked. You define the block sets.

  • Path analysis

    SiteKeeper
    Opt-in per host. Free on 3 hosts.
    LeechBlock NG
    Not in the feature list we checked

  • Chrome Web Store

    SiteKeeper
    Chrome extension
    LeechBlock NG
    about 100,000 users on the Chrome Web Store (October 2026); 4.9★ from 1.6K ratings; v1.7.3

How SiteKeeper and LeechBlock NG actually differ

Rules versus a per-site cap

LeechBlock NG is built as sets. Each of up to 30 sets has its own days and times. A set can block in a fixed period, after a time limit (the official example is 10 minutes every hour), or both. You can add wildcards, exceptions, and keywords. That is more flexible than a single daily number. The options are rule-based: you configure the sets yourself. We are not calling that hard or ugly. It is the point of the tool.

SiteKeeper is one host at a time. You set a daily cap, an optional weekly cap (Monday–Sunday), and optional time windows. Time windows with their own budget, for example a stricter cap on weekdays. Outside the window, daily and weekly caps still apply. This is not a hard scheduled block. There is no “10 minutes every hour,” no keyword rule, and no exception list. Free accounts can save limits on up to 6 hosts. The code we checked does not enforce that 6-host cap on Pro.

LeechBlock is the stronger free blocker

Lockdown blocks immediately for a duration you choose. A password or a random access code can protect the options page. A countdown can delay the block instead of dropping it. A password can open a blocked site. The official site says LeechBlock is not designed for parental control, but those controls are still more than SiteKeeper offers.

SiteKeeper’s block page says “Time's Up!” You can add 5, 15, 30, or 60 minutes, which raises the saved cap, or turn the limit off, or disable the extension. There is no lockdown, no access code, and no delay countdown. If you want a rule you cannot casually edit, LeechBlock is the honest pick — and it is free and open source.

What you get instead of those rules

SiteKeeper’s case is the log. The active tab is tracked automatically. Tags are assigned on device when Chrome’s built-in model is available, otherwise by keywords, and you can change them. A signed-in batch classify is optional. The productivity score runs from 0 to 100 on the device. Reports include charts. The weekly report can open every Sunday. It is not emailed. CSV export is included. Path analysis is opt-in, and the free plan covers 3 hosts.

That dashboard is not in the feature list we checked. LeechBlock’s developer discloses that the extension will not collect or use your data. SiteKeeper’s line is different and narrower: we never sell or share your data. Tracking works without an account. Browsing history is not synced across devices. Do not read either sentence as a lab audit of the other product.

Browsers and price

LeechBlock NG runs on Firefox, Chrome, Edge, and other Chromium browsers (Brave, Opera, Vivaldi). SiteKeeper ships a Chrome build only. If Firefox is the browser you actually use, this page is the wrong alternative.

Free. Open source under the Mozilla Public License 2.0. The GitHub project has about 1,000+ stars. SiteKeeper is free to start. Pro $4.99/mo or $24.99/yr, and Lifetime $29.99 once, if you pass 6 limited sites or 3 path-analysis hosts. Paying for SiteKeeper when LeechBlock already does the blocking you want is hard to justify. Pay only if the dashboard is the feature you opened this page for.

Pricing: SiteKeeper vs LeechBlock NG

  • Blocker

    SiteKeeper
    Free soft caps on up to 6 sites
    LeechBlock NG
    Free. The whole rule engine, including lockdown.

  • Tracking extras

    SiteKeeper
    Free to start, no account required to track. Daily and weekly limits on up to 6 sites. Path analysis on up to 3 hosts. Productivity score and CSV export included. Pro $4.99/mo or $24.99/yr. Lifetime $29.99 once.
    LeechBlock NG
    Free (open source, MPL-2.0)

LeechBlock NG is free and open source (MPL-2.0), with about 1,000+ GitHub stars, checked October 3, 2026. SiteKeeper Pro is optional and does not add a hard lock.

Why people look for a LeechBlock NG alternative

You want the time before the rule

LeechBlock blocks what you already named. SiteKeeper shows active-tab time on sites you have not listed yet, then you cap the ones that dominate the week.

Per-site setup instead of block sets

Thirty sets with periods, rolling limits, wildcards, and keywords are the right tool when you want them. A daily cap and a weekly cap on one host is the shorter setup when you do not.

A score and a path, not only a block

SiteKeeper adds a 0–100 productivity score, tags, charts, and opt-in path analysis. LeechBlock’s public feature list is the rule engine, not that report.

You are already in Chrome

LeechBlock’s Firefox support is a real advantage SiteKeeper cannot match. If you live in Chrome and want the dashboard, the browser gap matters less.

Which should you use?

Choose SiteKeeper if

  • You want an automatic Chrome time log, not only a block set
  • You want a 0–100 score, tags, charts, and path analysis
  • A daily cap and a weekly cap per site is enough structure
  • You accept a soft block you can extend or turn off

Choose LeechBlock NG if

  • You want the more powerful free rule engine, including “10 minutes every hour”
  • You want lockdown, a password or access code, delays, wildcards, exceptions, or keywords
  • You use Firefox, Edge, Brave, Opera, or Vivaldi, not only Chrome
  • You want it free and open source (MPL-2.0)

Switching from LeechBlock NG

There is no import. A LeechBlock set does not become a SiteKeeper limit on its own. Recreate the hosts you still want to cap.

What you can take with you

  • Hostnames from your block sets, copied by hand into per-site limits. A set that groups many sites is not one SiteKeeper budget.
  • A time-limit number, as a starting daily cap. LeechBlock’s “every hour” pattern has no SiteKeeper equivalent.
  • Nothing from lockdown, passwords, countdowns, wildcards, exceptions, or keyword rules.

What you set up again

  • Each important host as its own daily and, if you want it, weekly cap.
  • Time windows where a weekday budget should differ from the evening. They are budgets, not LeechBlock time periods.
  • The log itself. SiteKeeper time starts at install. LeechBlock was not storing this dashboard for you.

Install SiteKeeper beside LeechBlock, cap a few sites, and compare a week. If you still need lockdown or Firefox, keep LeechBlock. Many people should.

Keep exploring

Frequently asked questions

Keep the rules if you need them. Or start with the log.

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