Calendar syncing tool that pulls and pushes events between calendar sources and destinations via iCal/ICS or OAuth, with support for anonymized busy/free events. ([Source Code](https://github.com/ridafkih/keeper.sh)) `AGPL-3.0` `Docker`
Best 191 Containerization tools in 2026
"Keeper.sh", "Readeck", "LinkWarden", "linkding", "LinkAce" are some of the Containerization tools we track today, each verified for real availability and pricing.
Docker, Kubernetes, and container orchestration tools.
Save the precious readable content of web pages you like and want to keep forever. See it as a bookmark manager and a read later tool. ([Source Code](https://codeberg.org/readeck/readeck), [Clients](https://codeberg.org/readeck/browser-extension)) `AGPL-3.0` `Go/Docker`
Bookmark and archive manager to store your useful links. ([Source Code](https://github.com/linkwarden/linkwarden)) `MIT` `Docker/Nodejs`
Minimal bookmark management with a fast and clean UI. Simple installation through Docker and can run on your Raspberry Pi. ([Demo](https://demo.linkding.link/login/), [Source Code](https://github.com/sissbruecker/linkding)) `MIT` `Docker`
Bookmark archive with automatic backups to the Internet Archive, link monitoring, and a full REST API. Installation is done via Docker, or as a simple PHP application. ([Demo](https://demo.linkace.org/guest/links), [Source Code](https://github.com/Kovah/LinkAce/)) `GPL-3.0` `Docker/PHP`
Bookmark-everything app with a touch of AI for the data hoarders out there. ([Demo](https://try.karakeep.app/signin), [Source Code](https://github.com/karakeep-app/karakeep)) `AGPL-3.0` `Docker`
What is Karakeep?
Bookmark-everything app with a touch of AI for the data hoarders out there. (Demo, Source Code) AGPL-3.0 Docker
Karakeep's Core Features
- AI-powered bookmark tagging
- Full text search
- Collaborative lists
- RSS feed integration
- Browser extensions
- Self-hosting support
Handcrafted bookmark manager combining powerful tagging, instant search, and a clean, distraction-free interface. Built for large collections and advanced workflows, optimized for efficiency and ease-of-use. ([Demo](https://demo.faved.to/), [Source Code](https://github.com/denho/faved)) `MIT` `Docke
Webbased app to book seats, desks and rooms for offices. ([Source Code](https://github.com/seatsurfing/seatsurfing)) `GPL-3.0` `Docker`
Create polls to vote on dates and times (alternative to Doodle). ([Demo](https://app.rallly.co), [Source Code](https://github.com/lukevella/rallly)) `AGPL-3.0` `Nodejs/Docker`
Resource scheduling solution offering a flexible, mobile-friendly, and extensible interface for organizations to manage resource reservations. ([Demo](https://librebooking-demo.fly.dev/), [Source Code](https://github.com/LibreBooking/librebooking)) `GPL-3.0` `PHP/Docker`
Event management and ticketing platform for conferences, concerts, and more. Offering customizable event pages and embeddable ticket widgets. ([Demo](https://demo.hi.events/event/1/dog-conf-2030), [Source Code](https://github.com/HiEventsDev/hi.events)) `AGPL-3.0` `Docker`
What is Hi.Events?
Event management and ticketing platform for conferences, concerts, and more. Offering customizable event pages and embeddable ticket widgets. (Demo, Source Code) AGPL-3.0 Docker
Hi.Events's Core Features
- Online ticket sales
- QR code check-in
- Custom event pages
- Embeddable ticket widget
- Paid into your own Stripe account as tickets sell
- Promo codes and discounts
Podcast management hosting platform that includes the latest podcast 2.0 standards, an automated Fediverse feed, analytics, an embeddable player, and more. ([Source Code](https://code.castopod.org/adaures/castopod)) `AGPL-3.0` `PHP/Docker`
Automated Comic Book (cbr/cbz) downloader program for use with NZB and torrents. ([Source Code](https://github.com/MylarComics/mylar3)) `GPL-3.0` `Python/Docker`
Event-driven, language-agnostic platform to create, schedule, and monitor workflows. In code. Coordinate data pipelines and tasks such as ETL and ELT. ([Source Code](https://github.com/kestra-io/kestra)) `Apache-2.0` `Docker`
What is Kestra?
Event-driven, language-agnostic platform to create, schedule, and monitor workflows. In code. Coordinate data pipelines and tasks such as ETL and ELT. (Source Code) Apache-2.0 Docker
Kestra's Core Features
- Declarative YAML workflows
- Language-agnostic tasks (Python
- SQL
- R
- Bash
- and more)
Listen for pings and sends alerts when pings are late. ([Source Code](https://github.com/healthchecks/healthchecks)) `BSD-3-Clause` `Python/Docker`
Omni-channel customer engagement and messaging automation platform (alternative to Braze, Customer.io, Iterable). ([Demo](https://demo.dittofeed.com/dashboard/journeys), [Source Code](https://github.com/dittofeed/dittofeed)) `MIT` `Docker`
What is Dittofeed?
Omni-channel customer engagement and messaging automation platform (alternative to Braze, Customer.io, Iterable). (Demo, Source Code) MIT Docker
Dittofeed's Core Features
- /dashboard/segments
- /dashboard/journeys
- /dashboard/templates
- /dashboard/subscription-groups
- /dashboard/broadcasts
- Targeting users above an age trait threshold.
Powerful Cron alternative with a Web UI. It allows you to define dependencies between commands as a Directed Acyclic Graph (DAG) in a declarative YAML format. ([Source Code](https://github.com/dagucloud/dagu)) `GPL-3.0` `Go/Docker`
Employee onboarding platform that allows you to provision user accounts and create sequences with todo items, resources, text/email/Slack messages, and more! Available as a web portal and Slack bot. ([Source Code](https://github.com/chiefonboarding/ChiefOnboarding)) `AGPL-3.0` `Docker`
Stay up-to-date with web-site content changes. ([Source Code](https://github.com/dgtlmoon/changedetection.io)) `Apache-2.0` `Python/Docker`
Business automation tool that lets you connect different services like Twitter, Slack, and more to automate your business processes (alternative to Zapier). ([Source Code](https://github.com/automatisch/automatisch)) `AGPL-3.0` `Docker`
Platform to programmatically author, schedule, and monitor workflows. ([Source Code](https://github.com/apache/airflow/)) `Apache-2.0` `Python/Docker`
No-code business automation tool like Zapier or Tray. For example, you can send a Slack notification for each new Trello card. ([Source Code](https://github.com/activepieces/activepieces)) `MIT` `Docker`
What is Activepieces?
No-code business automation tool like Zapier or Tray. For example, you can send a Slack notification for each new Trello card. (Source Code) MIT Docker
Activepieces's Core Features
- Price $20/mo
- Hosting Cloud or on-prem
- How to buy Self-serve
- Credits included 10,000 a month
Pros
- + Open source; Community Edition is MIT-licensed
- + 760+ open-source integration pieces
- + Unlimited flows on every plan; one credit covers a full run
- + AI Agents and Chat work across connected apps and MCP servers
Cons
- – Runs gated by credits; free plan waits for daily reset when exceeded
- – AI steps cost extra credits (2-20 credits per step)
- – Plus plan limited to 5 users; Team includes 25 users
- – SSO, audit logs and secret managers reserved for Team/Ultimate
Best suited for
Teams wanting open-source, self-hostable automation, Businesses automating with AI agents across many apps, Non-developers who describe tasks in plain words
Feature-rich email archiving solution. ([Source Code](https://github.com/jsuto/piler/)) `GPL-3.0` `C/Docker/deb`
Email archiving solution with full-text search and eDiscovery search features. ([Demo](https://github.com/LogicLabs-OU/OpenArchiver?tab=readme-ov-file#-live-demo), [Source Code](https://github.com/LogicLabs-OU/OpenArchiver)) `AGPL-3.0` `Docker`