Weld by weld-project
High-performance runtime for data analytics applications
About Weld
From the project's README at github.com/weld-project/weld. Lightly cleaned for readability; for the full source see the upstream repo.
Weld is a language and runtime for improving the performance of data-intensive applications. It optimizes across libraries and functions by expressing the core computations in libraries using a common intermediate representation, and optimizing across each framework.
Modern analytics applications combine multiple functions from different libraries and frameworks to build complex workflows. Even though individual functions can achieve high performance in isolation, the performance of the combined workflow is often an order of magnitude below hardware limits due to extensive data movement across the functions. Weld’s take on solving this problem is to lazily build up a computation for the entire workflow, and then optimizing and evaluating it only when a result is needed.
You can join the discussion on Weld on our Google Group or post on the Weld mailing list at weld-group@lists.stanford.edu. Contents
Building MacOS LLVM Installation Ubuntu LLVM Installation Building Weld Documentation Grizzly (Pandas on Weld) Tools Building
Health score breakdown
6-dimension composite. See methodology for formula and weights.
Adoption signals
Real-world usage data, pulled from each registry. The bigger the numbers, the more battle-tested the project.
| Signal | Value | Source |
|---|---|---|
| GitHub stars | 3.0k | github.com/weld-project/weld |
| GitHub forks | 252 | github.com/weld-project/weld |
| CRATES downloads (last month) | 113 | weld |
Release & maintenance
Is this project actively maintained, or about to die? Check the recency of last commit and last release.
| Project age | 10.0 years | since Jun 2016 |
| Last commit | 3 months ago | Apr 13, 2026 |
| Releases shipped | 3 | last: 6.4 years ago |
Self-hosting cost across providers
Detected requirements: 4GB RAM, 40GB disk minimum. Cheapest plan per provider that meets the requirement.
| Provider | Plan | Specs | Monthly | |
|---|---|---|---|---|
| hetzner | CAX11 | 2c · 4GB · 40GB | $4.13 USD | Deploy → |
| vultr | VC2 | 1c · 1GB · 25GB | $5 USD | Deploy → |
| linode | Nanode 1GB | 1c · 1GB · 25GB | $5.12 USD | Deploy → |
| digitalocean | Basic Regular 1GB | 1c · 1GB · 25GB | $6 USD | Deploy → |
What people say on Hacker News
- Ben Welsh made an index of all FiveThirtyEight articles on the Internet Archive
- Show HN: RTFRA - A Humble Proposal [RFC]
- Show HN: Native-feeling charts for Obsidian Bases, built with Deno
- CloudNSite – AI agents that replace manual business processes for SMBs
- Show HN: YouTube MCP, give any AI agent access to YouTube
Ready to self-host Weld?
Spin up a hetzner CAX11 (4GB RAM, 40GB disk) for $4.13/mo and follow the project's official install docs.
Data last refreshed Jun 21, 2026.
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