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21km.lol

Alternatives to 21km.lol

50 Productivity apps to use instead, best rated first.

Top picks

  1. 1

    Linear

    The issue tracker you'll enjoy using

    4.8Free

    Launch
  2. 2

    Notion

    Your wiki, docs & projects

    4.7Free

    Launch
  3. 3

    Miro

    The collaborative whiteboard

    4.7Free / Team

    Launch
  4. 4

    Slack

    Where work happens

    4.6Free / Pro

    Launch
  5. 5

    Loom

    Async video messaging

    4.6Free / Pro

    Launch
  6. 6

    Logseq

    A privacy-first alternative to WorkFlowy

    logseq.com

    Launch

Why choose an alternative

  • The code is open

    44 of these are open source.

    L
    M
    P
    F
    F
    G

  • You can host it yourself

    5 of these are built to run on your own server.

    P
    P
    A
    K
    M

  • Your data stays yours

    7 of these are built around privacy.

    L
    N
    P
    A
    M
    T

  • They're free

    4 of these are free to use.

    S
    G

Side by side

2
21km.lol
Linear
Notion
Miro
Slack
Loom
L
Logseq
Rating–4.84.74.74.64.6–
Price–FreeFreeFree / TeamFree / ProFree / Pro–
Monthly visits–4.1M12M7.4M15M4.9M–
Open source––––––
LaunchLaunchLaunchLaunchLaunchLaunchLaunch

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Formbricks

Build forms and receive & manage submission data in one platform

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Grist

Spreadsheet Software to End Data Chaos

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Home Assistant

Open source home automation that puts local control and privacy first

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Jitsi

Free Video Conferencing Software for Web & Mobile

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14
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Mattermost

Collaboration Platform for Mission Critical Work

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Medusa

Headless e-commerce platform

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16
N

Nextcloud

Open source content collaboration platform

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17
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Notesnook

Open source zero knowledge private note taking

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18
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Odoo

Open Source ERP and CRM

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19
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Paperless-home

Paperless-home hosts your personal document management system: Paperless

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Plausible

Simple, privacy-friendly Google Analytics alternative

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21
R

RustDesk

Open source virtual / remote desktop infrastructure for everyone

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22
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Saleor

Composable, Open Source, Headless Ecommerce Platform

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23
S

Signal

Encrypted, secure chat and video calls

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24
U

Umami

Privacy-First Analytics Platform

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25
A

Alacritty

Modern cross-platform terminal emulator

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26
A

Automatisch

Open Source Zapier Alternative

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27
B

Bagisto

Headless e-commerce platform

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28
B

Better Auth

A comprehensive authentication framework offering email/password

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29
E

Element

Secure collaboration and messaging

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30
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ERPNext

Open-source ERP solution offering modules

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31
F

Fandom

The entertainment site where fans come first

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32
G

GitButler

A Git client for simultaneous branches on top of your existing workflow

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33
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Karakeep

Save, Organize & Tag with AI

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34
L

LanguageTool

Open source grammar, style and

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35
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Matomo

Privacy-first analytics you can trust

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36
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Memos

Memos is a self-hosted, open-source note-taking app built around a private

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37
O

OpenProject

Project management software

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38
P

Proton Mail

Free secure email account service provider with built-in end-to-end encryption

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39
R

Redash

Redash is an open-source data visualization and analytics platform

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40
S

Seafile

Open Source File Sync and Share Software

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41
T

Temporal

Workflows as code platform

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42
T

Tuta

Secure email for everybody. Open Source

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43
T

Twenty

Self-hostable CRM built for technical teams who need a fully customizable

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44
W

Windmill

Code-first orchestration platform for internal software

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45
Z

Zellij

A terminal multiplexer that organizes your workflow

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46
Z

Zotero

FOSS tool to collect, organize, cite, and

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47
Z

Zulip

Organized team chat

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48
A

ActivityWatch

Free open-source time tracker that automatically monitors your device usage

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49
A

Anarlog

Records system audio without joining your call

Launch
50
A

Anytype

An open-source Notion alternative

Launch

About 21km.lol

2

21km.lol

Sponsor Aleks at a half marathon. Your logo runs all 21.1 km

Sponsor Aleks at a half marathon. Your logo runs all 21.1 km. Turns a real half-marathon shirt into a live sponsorship auction where higher bids get bigger, more prominent logo placements.

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Productivity
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21km.lol