OneDev vs GitLab CE: Which Should You Self-Host?

Quick Verdict

OneDev delivers most of what makes GitLab CE valuable — built-in CI/CD, issue tracking, package registries, code review — at a quarter of the resource cost. For small-to-medium teams self-hosting their DevOps platform, OneDev at 2 GB of RAM is the better choice unless you specifically need GitLab CI/CD syntax compatibility or enterprise-grade features like the container registry tightly integrated with CI pipelines.

Overview

Both are all-in-one DevOps platforms that bundle Git hosting, CI/CD, issue tracking, and package management. The difference is scale and ecosystem.

OneDev is a Java-based platform built by a small team, focused on providing a streamlined DevOps experience with a visual CI/CD editor, automated Kanban boards, and symbol-level code search. It runs on 2 GB of RAM and targets small-to-medium teams.

GitLab CE is the Community Edition of the industry-standard DevOps platform. It bundles dozens of services (Puma, Sidekiq, Gitaly, PostgreSQL, Redis, nginx) into one container. It has the largest self-hosted DevOps ecosystem but demands 4-8 GB of RAM.

Feature Comparison

Feature	OneDev	GitLab CE
Git hosting	Yes	Yes
CI/CD	Visual editor + YAML	.gitlab-ci.yml (industry standard)
CI/CD executors	Docker, K8s, agents, bare metal	GitLab Runners (Docker, K8s, shell)
Issue tracking	Custom workflows, automated Kanban	Boards, milestones, weights, iterations
Code review	Auto-reviewer suggestion	Merge request approvals
Container registry	No built-in	Yes — tightly integrated with CI
Package registry	Docker, NPM, Maven, NuGet, PyPI	Comprehensive (same formats + more)
Wiki	No	Yes — per-project wikis
Web IDE	No	Yes
Code search	Symbol-level navigation	Basic (advanced in Premium)
Security scanning	Dependency, binary, container scanning	SAST/DAST (some CE, some Premium)
Snippets/Gists	No	Yes
Pages (static hosting)	No	GitLab Pages
API	REST	REST + GraphQL
SSO	LDAP, OpenID	LDAP, SAML, OIDC
License	MIT	MIT (CE)

Installation Complexity

OneDev deploys as a single container with an optional external database. The embedded HSQLDB means zero dependencies for small teams. Configuration is through environment variables and the web UI. Startup takes 1-2 minutes.

GitLab CE is one container that internally runs 10+ services. It requires 3-5 minutes for initial startup and uses Ruby-syntax GITLAB_OMNIBUS_CONFIG for configuration. The container image is 2.5+ GB versus OneDev’s ~400 MB.

OneDev is significantly simpler to deploy, configure, and maintain. GitLab’s Omnibus configuration is powerful but has a steeper learning curve.

Performance and Resource Usage

Resource	OneDev	GitLab CE
Minimum RAM	~1 GB	4 GB (2 GB with aggressive optimization)
Recommended RAM	2 GB	8 GB
CPU	2 cores	4 cores
Docker image size	~400 MB	~2.5 GB
Startup time	1-2 minutes	3-5 minutes
Disk (application)	~400 MB	10 GB + 20 GB database

OneDev uses 2-4x less RAM and has a 6x smaller Docker image. On a 4 GB VPS, OneDev runs comfortably alongside other services; GitLab CE barely fits at all.

Community and Support

OneDev has a smaller community (~13K GitHub stars) but active development with regular releases. Documentation is comprehensive. The trade-off is fewer third-party integrations and a smaller knowledge base of community-written guides.

GitLab CE has a massive ecosystem (~24K GitHub stars for CE, millions of gitlab.com users). .gitlab-ci.yml is an industry standard. The documentation is excellent. Community support is extensive — virtually every CI/CD problem has a Stack Overflow answer. However, many advanced features require paid tiers (Premium/Ultimate).

Use Cases

Choose OneDev If…

• You want integrated CI/CD but can’t afford GitLab’s 4-8 GB RAM requirement
• You prefer a visual CI/CD editor over YAML-only configuration
• You need symbol-level code search out of the box
• You want automated Kanban boards tied to your development workflow
• Your team is under 50 developers
• You’re running on a VPS with 2-4 GB of total RAM

Choose GitLab CE If…

• You need .gitlab-ci.yml compatibility (migrating from gitlab.com, existing pipelines)
• You need the built-in container registry tightly integrated with CI/CD
• You need GitLab Pages for static site hosting
• You need wikis and snippets per project
• You have 8+ GB of RAM available
• Your team is 50+ developers or you need enterprise-grade scalability
• You want the largest possible community and third-party integration ecosystem

Final Verdict

OneDev is the better self-hosted DevOps platform for most small-to-medium teams. It provides 80% of GitLab CE’s functionality at 25% of the resource cost, with a simpler deployment and a visual CI/CD editor that lowers the barrier to pipeline adoption. The missing pieces — container registry, wikis, web IDE, GitLab Pages — matter to some teams but not most.

GitLab CE wins when ecosystem compatibility matters. If your team already uses .gitlab-ci.yml, if you’re migrating from gitlab.com, or if you need the container registry tightly integrated with CI pipelines, GitLab CE is worth the resource investment. For greenfield deployments where you’re choosing from scratch, OneDev gives you more per gigabyte of RAM.

Related

• How to Self-Host OneDev — full setup guide
• How to Self-Host GitLab CE — full setup guide
• OneDev vs Gitea — mid-weight vs lightweight
• GitLab CE vs Gitea — heavyweight vs lightweight
• Best Self-Hosted Git Hosting — full category roundup
• Docker Compose Basics — prerequisite guide