Living collection
Work and organization | Open Source Apps That Replace Paid Software
23 resourcesOrganized by use
Work and organization
Work and organization
4 resourcesFull profiles and sources
Twenty
Resource
Sources checked: 18 Sep 2026
Teams that want a modern CRM and control over their data.
Open source CRM for managing contacts, companies and sales opportunities, with managed cloud hosting or your own server.
Best for: Teams that want a modern CRM and control over their data.
Why it belongs here. It brings companies, contacts and sales opportunities into an interface you can adapt to your business. Choose a managed service or host the CRM on your own infrastructure.
Its limit. Hosting it yourself also means maintaining it: the server, updates and backups. Some organization and security features need a commercial plan. Open source does not make every option free.
If your leads are scattered across spreadsheets, email and notes, Twenty brings them together so you can see which conversation needs a follow-up. Pay for a ready-to-use service or run it yourself, with the technical work that involves.
Compatibility and setupRequirements and agent differences
How to use it In your browser, through Twenty Cloud or your own installation. The cloud service takes server administration off your hands.
Self-hosting The official documentation provides Docker Compose installation instructions and asks for at least 2 GB of RAM. You need to configure the public address, HTTPS, persistent storage and backups. That minimum does not establish capacity for every team size.
Real cost and licenseResource, agent and extra costs
Software and infrastructure The self-hosted Pro plan has a license cost of €0 per user per month. You pay for the server and its maintenance; commercial features are priced separately.
Managed service Twenty Cloud Pro works out at roughly €10.47 per user per month on monthly billing, or €7.85 per month on annual billing. Organization is about €21.82 per month, or €16.58 with annual billing. These indicative conversions use the ECB exchange rate from 18 September 2026; the provider lists prices in dollars. Taxes and the exchange rate at payment affect the final amount.
License The project combines code mainly under AGPLv3, MIT packages and commercially licensed files. Check the license for the features you plan to use, especially if you modify or redistribute the product.
Example and alternativeWhen it helps and what else to use
Example use case A small team can record an interested company, attach a contact, open a sales opportunity and set the next task. This is an example to guide a trial, not Dani's personal experience or a performance test.
What to compare If you already use HubSpot, Pipedrive or Salesforce, check which processes, automations and integrations you need to retain before considering a move. A simpler interface does not guarantee that Twenty covers your current setup.
Sources and reviewWhat is documented and what was tested
Review date Sources consulted on 18 September 2026. Prices checked against the billing and hosting selector on the official website.
Scope This entry relies on documentation and public evidence. The demo.twenty.com address redirected to Twenty Cloud's sign-in page; no account was created and no migration with real data was tested.
Product ↗Official pricing ↗ECB reference exchange rate ↗Docker Compose installation ↗Code and license ↗Terms and hosting options ↗
Resource detailsEditorial profile and links
- Type: Web CRM.
- Deployment: Cloud or your own server.
- License: Mainly AGPLv3, with MIT packages and commercial components.
- Base self-hosted license: €0; infrastructure and maintenance cost extra.
openGym
App
Sources checked: 2 Sep 2026
Logging workouts with a library of 1,300+ exercises, progress tracking and one-rep max estimates
Self-hosted workout tracking app with more than 1,300 animated exercises, set logging and progress charts, without an account or subscription.
Best for: Logging workouts with a library of 1,300+ exercises, progress tracking and one-rep max estimates
Why it belongs here. Logs routines, sets and progress in an app you can host yourself, with export options documented by the project.
Its limit. The review examined the demo, repository and opinions; it does not establish a self-hosted installation, complete migration or long-term use.
Keep your training history without tying it to a subscription. Before moving all your data, try one routine and make sure you can recover it afterwards.
Compatibility and setupRequirements and agent differences
Ways to use it. The project documents a self-hosted server, PWA and Android APK. Check the current version before choosing a route; the review did not verify a complete installation.
Existing data. The README documents JSON export and import and importers for other apps. Check a sample of your exercises, dates, units and sets before migrating everything.
Real cost and licenseResource, agent and extra costs
Software and server. The app describes itself as free and self-hostable. That choice transfers the cost and maintenance of hardware, backups and updates to whoever installs it.
Example and alternativeWhen it helps and what else to use
First steps. Explore the demo, log a sample workout and test an export. For group use, check isolation between profiles and a restore before adopting it.
Sources and reviewWhat is documented and what was tested
Verified scope. The Marketing Ultra review, updated on 11 September 2026, describes examining the demo, repository and external opinions, without installing a server or migrating training history. This entry preserves that limit.
Resource detailsEditorial profile and links
- Replaces: Strong, JEFIT or other gym logging apps
- Deployment: self-hosted
- Platforms: Web (PWA), Android (APK), iOS (PWA)
- Compatibility: On iOS it can only be installed as a PWA through Safari; there is no native App Store app
- Watch out: Cross-device sync and passkey sign-in require hosting the server with Docker; the browser demo does not include them
LifeForge
App
Sources checked: 6 Sep 2026
Bringing tasks, finances, notes, projects and photos into one self-hosted dashboard without relying on external SaaS tools
Modular self-hosted dashboard that brings tasks, finances, a journal, notes and photos into one web app, with your data under your control.
Best for: Bringing tasks, finances, notes, projects and photos into one self-hosted dashboard without relying on external SaaS tools
Resource detailsEditorial profile and links
- Replaces: Notion + YNAB + Google Photos, for people who prefer self-hosting
- Deployment: self-hosted, with Docker or manual installation
- Platforms: Web browser
- Watch out: Early development: modules and architecture can change; the CC BY-NC-SA 4.0 license prohibits commercial use
HistApp
License: MIT
Sources checked: 13 Sep 2026
Legacy app recovered from the Inbox.