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Top 23 Container Open-Source Projects
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Project mention: Scarab Diagnostic Suite Field Test #013: Kubernetes Watch Cache Critical-Section Boundary | dev.to | 2026-06-06
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SaaSHub
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devops-exercises
Linux, Jenkins, AWS, SRE, Prometheus, Docker, Python, Ansible, Git, Kubernetes, Terraform, OpenStack, SQL, NoSQL, Azure, GCP, DNS, Elastic, Network, Virtualization. DevOps Interview Questions
Project mention: 10 GitHub Repositories That Will Actually Teach You DevOps in 2026 | dev.to | 2026-05-05github.com/bregman-arie/devops-exercises. 82k stars. Maintained by Arie Bregman, ex-Red Hat.
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> Like… has anyone done a Jepsen-like stress test on rsyslogd and shared the results? I’ve half-assedly looked before and not been able to find anything.
I've not used rsyslogd specifically, but I don't see how you'd have any issues with the log volume you described.
[1] https://github.com/netdata/netdata/tree/master/src/crates/ne...
[2] https://learn.netdata.cloud/docs/logs/systemd-journal-logs/s...
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Moby
The Moby Project - a collaborative project for the container ecosystem to assemble container-based systems
There were many attempts to fix this issue by changing cgroup isolation settings using flags like --cgroupns=host etc ,but nothing worked. Similar outcomes were also obtained by other attempts like these. https://github.com/moby/moby/issues/16238
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trivy
Find vulnerabilities, misconfigurations, secrets, SBOM in containers, Kubernetes, code repositories, clouds and more
Project mention: trivy VS onequery - a user suggested alternative | libhunt.com/r/trivy | 2026-06-01 -
Project mention: NPM packages compromised, 271 antv, echarts-for-react, size-sensor, timeago | news.ycombinator.com | 2026-05-19
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Docker runs a long-lived background daemon (dockerd), traditionally as root. Every CLI call talks to it over a socket. Podman doesn't. Each podman invocation is just a regular process you run as your own user.
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Dokku is the smallest PaaS implementation you've ever seen. It's a self-hosted Heroku alternative that runs on a single server. Push code with git push — Dokku builds, deploys, and manages your apps.
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curl -LO https://github.com/kubernetes/minikube/releases/latest/download/minikube-linux-amd64 sudo install minikube-linux-amd64 /usr/local/bin/minikube && rm minikube-linux-amd64 minikube version
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90DaysOfDevOps
This repository started out as a learning in public project for myself and has now become a structured learning map for many in the community. We have 3 years under our belt covering all things DevOps, including Principles, Processes, Tooling and Use Cases surrounding this vast topic.
Project mention: 10 GitHub Repositories That Will Actually Teach You DevOps in 2026 | dev.to | 2026-05-05github.com/MichaelCade/90DaysOfDevOps. 29k stars. Three years of community-curated 90-day plans.
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Project mention: Ask HN: What dev tools do you rely on that nobody talks about? | news.ycombinator.com | 2026-04-01
https://github.com/atuinsh/atuin for fuzzy shell history (ctrl+r)
https://github.com/sharkdp/bat (nice coloured cat replacement)
https://github.com/abiosoft/colima (so I don't need docker desktop)
https://github.com/duckdb/duckdb (performant database that lets you directly query JSON, parquet, csv files with SQL queries and convert one to the other.
https://github.com/eradman/entr (rerun commands automatically when provided files change) (useful for rerunning test commands automatically once you save the file you're editing.
https://github.com/martinvonz/jj and https://github.com/idursun/jjui (Jujutsu VCS, been using it for three months and I really enjoy it)
https://github.com/jesseduffield/lazydocker (managing containers, images, volumes easily)
https://github.com/jesseduffield/lazygit (best tui for git and outside niche git commands, the fastest way to use git.)
https://github.com/jdx/mise (fast asdf, direnv, and task runner replacement) (install pretty much version of tool, language, env vars in a per directory level. (Or global if you want))
https://github.com/ajeetdsouza/zoxide (intelligent cd to move between directories incredibly quickly)
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Depending on what other (additional) features you're willing to accept, the GoHarbor[0] registry supports pull-through as well as mirroring and other features, it's a nice registry that also supports other OCI stuff like Helm charts, and does vulnerability scanning with "Interrogation Services" like Trivy.
I've been using it at home and work for a few years now, might be a bit overkill if you just want a simple registry, but is a really nice tool for anyone who can benefit from the other features.
[0] https://goharbor.io/
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dapr
Dapr is a portable runtime for building distributed applications across cloud and edge, combining event-driven architecture with workflow orchestration.
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Project mention: Bridging the Gap: Future Directions for Kubernetes and Distributed Systems | dev.to | 2026-05-04
The industry's first pass at solving this was multi-cluster management. Platforms like Anthos, Rancher, and OpenShift are essential for managing fleets of Kubernetes clusters. They provide a single pane of glass for configuration, policy, and deployments across different environments. This was a critical step forward for operational maturity.
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Project mention: Pulumi Has a Free API: Infrastructure as Code with Real Programming Languages | dev.to | 2026-03-28
Pulumi lets you define cloud infrastructure using real programming languages — TypeScript, Python, Go, C#, Java — instead of YAML or HCL. You get loops, conditionals, functions, type checking, and IDE autocomplete for your infrastructure.
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Project mention: War Story: Debugging a Kafka 4.0 Consumer Lag Spike During a Product Launch Using Cilium 1.17 and Datadog 2026 | dev.to | 2026-04-28
This adds less than 2% overhead to your node’s CPU usage but exposes 14 Kafka-specific eBPF metrics that are critical for debugging lag. We’ve found that 72% of Kafka 4.0 lag incidents we’ve responded to in 2026 stem from node-level network policy issues that only eBPF can detect. If you’re using a different CNI, you can still use Cilium’s standalone eBPF probe https://github.com/cilium/cilium/tree/v1.17.2/contrib/kafka-probe to get these metrics without replacing your entire CNI. Always validate that kafka.heartbeat_drops_total is 0 in staging before every launch.
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Lean and Mean Docker containers
Slim(toolkit): Don't change anything in your container image and minify it by up to 30x (and for compiled languages even more) making it secure too! (free and open source)
Project mention: I Ditched Docker for Podman (and You Should Too) | news.ycombinator.com | 2025-09-05 -
Project mention: Comparison: k9s 0.32.0 vs. Lens 6.0 vs. Octant 0.25.0 for K8s 1.32 Administration | dev.to | 2026-04-28
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Project mention: Zeroserve: A zero-config web server you can script with eBPF | news.ycombinator.com | 2026-06-06
You just helped to dredge up a memory, which brought me back to this fascinating project:
https://redbean.dev
If this piques your interest, make sure to check out the portable C library used to create it, which is also fascinating:
https://github.com/jart/cosmopolitan
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Project mention: Kubelet Metrics: How cAdvisor and CRI Collect Kubernetes Stats | dev.to | 2026-05-28
implement CRI ListPodSandboxMetrics
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Underneath the hood, Substrate uses gvisor (same thing as the Agent Sandbox project from the CNCF SIG), which is a container sandbox developed by Google that focuses on security, isolation, and the ability to use it in an efficient fashion (e.g - not take up a ton of hardware resources).
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Project mention: Show HN: C++26 Reflection for Python Algo Trading | news.ycombinator.com | 2026-02-22
There’s a constant tension in quant dev between speed-to-market (Python) and speed-to-book (C++). We've had bridges like PyBind11 [1] for years, but the manual boilerplate is usually too high a tax to use them for daily work.
With the C++26 Reflection (P2996) [2], that bridge can now be made invisible. That's the new syntax: ^^T and [: x :] .
I built this repo to show how you can use the Bloomberg/Clang P2996 fork [3] to automatically reflect a C++ quant engine into a Python execution loop. I used Merton Jump Diffusion [4] as the shell - it’s a standard model (with no special alpha) - to show the tech in a real-world context. I initially found out this was working from Callum Piper's ACCU talk [5].
I've included a justfile and Docker Clang build so people can experiment with the new reflection syntax without having to battle through the build tedium.
1. https://github.com/pybind/pybind11
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No. Portainer is web-only. You can open a container console through the Portainer web UI, but Portainer itself has no terminal interface. If you want a TUI, use Lazydocker or ctop.
NOTE:
The open source projects on this list are ordered by number of github stars.
The number of mentions indicates repo mentiontions in the last 12 Months or
since we started tracking (Dec 2020).
Containers discussion
Containers related posts
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Anthropic, please ship an official Claude Desktop for Linux
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Zeroserve: A zero-config web server you can script with eBPF
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Upvote if you'd like the VSCode devcontainers extension open sourced
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Ota vs Dev Containers
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Model Weight Registry: The Name Is Not the Model
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Codex just found a "workaround" of not having sudo on my PC
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Development Containers
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A note from our sponsor - SaaSHub
www.saashub.com | 7 Jun 2026
Index
What are some of the best open-source Container projects? This list will help you:
| # | Project | Stars |
|---|---|---|
| 1 | kubernetes | 122,816 |
| 2 | devops-exercises | 82,568 |
| 3 | Netdata | 79,077 |
| 4 | Moby | 71,622 |
| 5 | trivy | 35,597 |
| 6 | firecracker | 34,735 |
| 7 | podman | 31,933 |
| 8 | Dokku | 31,910 |
| 9 | minikube | 31,841 |
| 10 | 90DaysOfDevOps | 29,484 |
| 11 | colima | 29,138 |
| 12 | Harbor | 28,645 |
| 13 | dapr | 25,816 |
| 14 | rancher | 25,638 |
| 15 | Pulumi | 25,261 |
| 16 | cilium | 24,441 |
| 17 | Lean and Mean Docker containers | 23,293 |
| 18 | lens | 23,151 |
| 19 | cosmopolitan | 20,873 |
| 20 | containerd | 20,794 |
| 21 | gvisor | 18,450 |
| 22 | pybind11 | 17,892 |
| 23 | ctop | 17,685 |
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