ad-freiburg/qlever
Graph database implementing the RDF and SPARQL standards. Very fast and scales to more than a trillion triples on a single commodity machine
⚡ Executive Summary & Quick Facts
Authoritative Sourceqlever is qlever is an open-source project written in C++: Graph database implementing the RDF and SPARQL standards. Very fast and scales to more than a trillion triples on a single commodity machine..
| Repository | ad-freiburg/qlever ↗ |
|---|---|
| Primary Category | query engine |
| Language & Stack | C++ |
| Software License | Apache-2.0 |
| Community Traction | ★ 909 stars · ⑂ 143 forks · #6,885 globally |
| Maintenance | ● Active (Last commit: Oct 2, 2026) · 456 open issues |
| Target Audience | Developers and engineering teams building with C++, seeking reliable, tested, and actively maintained tooling for production workloads. |
Star History
Add Live Star History & Verified Badges to README.md
Keep your repository README looking professional and dynamic. As our continuous crawler records new stars, these official SVG badges update in real time with zero maintenance.
Renders your high-resolution star trajectory chart right inside your GitHub README or project docs.
[](https://githubrepo.cloud/repo/ad-freiburg/qlever?utm_source=readme_chart)Compact Shields-style badges for your README header. Shows real-time stars and global ranking.
[](https://githubrepo.cloud/repo/ad-freiburg/qlever?utm_source=readme_badge) [](https://githubrepo.cloud/repo/ad-freiburg/qlever?utm_source=readme_badge) [](https://githubrepo.cloud/repo/ad-freiburg/qlever?utm_source=readme_badge)Momentum
+23
STARS · LAST 30 DAYS
1
PER DAY
#544
MOST-STARRED C++
| Window | 7 days | 30 days | 90 days |
|---|---|---|---|
| Stars gained | +0 | +23 | +90 |
| Per day | 1 | 1 | 1 |
| Forks gained | +0 | +3 | +10 |
qlever gained 23 stars in the last 30 days, about 1 a day, and now has 909. It is about 12 years old and has averaged roughly 76 stars a year. It ranks #544 among C++ repositories and #6,885 across all languages on GitHubRepo.
Trending Record
18
DAYS ON TRENDING
#4724
BEST RANK
Oct 2, 2026
FIRST APPEARANCE
Active
STATUS TODAY
qlever has maintained a continuous presence across global trending indexes, peaking at #4724. Below is the 30-day activity profile:
💡 Overview
qlever is an open-source project written in C++: Graph database implementing the RDF and SPARQL standards. Very fast and scales to more than a trillion triples on a single commodity machine.
Engineered for speed, consistency, and developer ease, it solves common hurdles in query-engine, semantic-search-engine, sparql. It provides clear interfaces, comprehensive configuration options, and seamless integration with existing tools across the modern development stack.
⚡ Key Features
Optimized execution pipeline written in C++ for predictable speed.
Zero-friction configuration with comprehensive sensible defaults out of the box.
Cross-platform runtime support across Linux, macOS, and Windows environments.
Strong typing and modular architecture designed for easy extension and maintainability.
Standardized CLI and API interfaces for smooth integration into CI/CD workflows.
Active community maintenance with regular dependency updates and security patches.
📥 Installation
$ git clone https://github.com/ad-freiburg/qlever.git
cd qlever⚙ System Requirements
Platforms
- • macOS
- • Linux
- • Windows
Runtime & Dependencies
C++20 compliant compiler (GCC 11+, Clang 13+, MSVC)
Architecture
x86_64, ARM64 (Apple Silicon & Graviton)
🧠 How It Works
qlever coordinates its core functionality through a modular C++ pipeline. It parses configuration parameters, validates inputs, and resolves dependencies asynchronously. By minimizing runtime overhead and keeping allocations localized, it delivers predictable performance in both local development environments and automated production workloads.
🎯 Production Use Cases
Production System Integration
Embed qlever into C++ backend services to handle core application logic.
CI/CD Automated Pipelines
Run automated validation, builds, and integration suites during deployments.
Developer Tooling & Workflows
Accelerate developer onboarding with pre-configured project utilities.
Open Source Extension
Fork and customize internal modules under the repository's open Apache-2.0 license.
🚀 Getting Started
Install qlever using your package manager: `git clone https://github.com/ad-freiburg/qlever.git`
Initialize your project workspace or configuration file for qlever.
Import qlever into your codebase or invoke it directly from your terminal.
Execute your test suite or run `qlever --help` to verify successful setup.
👍 Strengths
⚠️ Considerations
⇄ Alternatives & Direct Competitors
👥 Who Should Use This
Developers and engineering teams building with C++, seeking reliable, tested, and actively maintained tooling for production workloads.
🏆 Nearby in the Rankings
ad-freiburg/qlever is currently ranked #6,885 by stars across every repository tracked on GitHubRepo. These are adjacent projects:
| Rank | Repository | Language | Stars | Action |
|---|---|---|---|---|
| #6,879 | openpubkey/openpubkey | Go | ★ 911 | Compare ↗ |
| #6,879 | session-foundation/session-android | Kotlin | ★ 911 | Compare ↗ |
| #6,879 | base/base | Rust | ★ 911 | Compare ↗ |
| #6,883 | googleapis/python-aiplatform | Python | ★ 910 | Compare ↗ |
| #6,883 | maddada/Ghostex | Rust | ★ 910 | Compare ↗ |
| #6,885 | ad-freiburg/qlever This Project | C++ | ★ 909 | |
| #6,885 | jhund/filterrific | Ruby | ★ 909 | Compare ↗ |
| #6,885 | GridSpace/grid-apps | JavaScript | ★ 909 | Compare ↗ |
| #6,885 | horizontalsystems/unstoppable-wallet-ios | Swift | ★ 909 | Compare ↗ |
| #6,885 | hyvor/relay | PHP | ★ 909 | Compare ↗ |
| #6,890 | GeyserMC/MCProtocolLib | Java | ★ 908 | Compare ↗ |
Frequently Asked Questions
What does qlever do? +
Graph database implementing the RDF and SPARQL standards. Very fast and scales to more than a trillion triples on a single commodity machine
What language is qlever written in? +
The primary language is C++. Topics include: query-engine, semantic-search-engine, sparql, sparql-endpoints, text-search.
Is qlever actively maintained? +
Yes, the last recorded push was on Oct 2, 2026 with 456 open issues being tracked.
How many stars does qlever have? +
qlever has 909 stars and 143 forks on GitHub.
How does qlever rank among GitHub repositories? +
With 909 stars, ad-freiburg/qlever is ranked #6,885 globally across all repositories tracked on GitHubRepo and #544 among C++ projects.
What license is qlever distributed under? +
The repository reports a Apache-2.0 license. Always verify the repository LICENSE file for legal terms.
