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@eon01 shared a post, 1 month, 1 week ago
Founder, FAUN.dev

Halfway Through 2025: These Are the Open Source Tools Everyone’s Talking About

2025 isn’t slowing down. From AI agents and lightweight frameworks to infrastructure that actually scales, open source is where the real innovation’s happening.

We’ve combed through FAUN.dev newsletters and community picks to bring you the standout projects developers are loving this year.

Every click you've made is a vote for what's hot and what's not in the open source world. We've analyzed thousands of interactions to identify the tools that have truly captured the attention and imagination of the FAUN.dev community.

If you're curious what's making waves in real dev workflows, this list is your shortcut.

The Hottest Open Source Projects
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@faun shared a link, 1 month, 2 weeks ago

Policy Zones: How Meta enforces purpose limitation at scale in batch processing systems

Meta’s Privacy Aware Infrastructure (PAI) slamsGovernable Data Annotations (GDAs)at runtime. It parses SQL across itsexabyte-scalewarehouse and blocks any flow that floutspurpose-usepolicies. It welds Unified Programming Model (UPM), Policy Evaluation Service (PES), Warehouse Permission Service (WP..

Policy Zones: How Meta enforces purpose limitation at scale in batch processing systems
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@faun shared a link, 1 month, 2 weeks ago

Cursor makes developers less effective?

METRtapped 16 devs to squash 136 live bugs withCursor(Sonnet 3.5/3.7). They clocked 146 h. AI users zipped through code, but stalls, reviews, and IDE lag devoured their lead. One dev who logged 50+ hours withCursorunlocked a 38% speedup. That steep learning curve and costly context pivots wipe out g..

Cursor makes developers less effective?
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@faun shared a link, 1 month, 2 weeks ago

To be a better programmer, write little proofs in your head

Developer sketchesproofsmid-code. This drives first-run correctness by leaning onmonotonicity,immutability,invariants, andpre/postconditions. They carve code into atomic steps. They erectfirewallsto contain impact zones. They wield induction for recursive logic—proof-affinity blooms. They drill form..

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@faun shared a link, 1 month, 2 weeks ago

TODOs aren’t for doing

Teams balk at trackingTODOcomments. Some funnel them into bug trackers. Others prune stale tags. The post saysTODOs stash edge-case insights, not tickets...

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@faun shared a link, 1 month, 2 weeks ago

Tencent’s AI-powered programming tool fully automates app development

Tencent’s AI team rolled out a 24-hour, invite-only beta of CodeBuddy to50,000 devs. CodeBuddy flips chat into code via itsconversation-is-programmingIDE. Devs forge end-to-end apps with natural language. Trend to watch:Chat-based IDEs portend a shift to natural-language dev workflows...

Tencent’s AI-powered programming tool fully automates app development
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@faun shared a link, 1 month, 2 weeks ago

Alibaba Launches Qwen3-Coder AI Model for Agentic Programming Excellence

Alibaba unleashedQwen3-Coder, a480B-parameter MoE titan. It ignites35Bparameters per token to code, debug, and automate workflows. It spans256Ktokens of context—and can stretch to a million. It ships asQwen3-Coder-480B-A35B-Instructon Hugging Face and GitHub. It hooks intoQwen CodeCLI orClaude Code...

Alibaba Launches Qwen3-Coder AI Model for Agentic Programming Excellence
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@faun shared a link, 1 month, 2 weeks ago

OpenAI prepares to launch GPT-5 in August, The Verge reports

OpenAI set to launch GPT-5 in August, blending distinct models for versatile AI functionality. Watch for potential delays due to development hurdles or competitor announcements.Implication: OpenAI is shifting from "one model fits all" to a modular AI architecture. Expect future LLMs to act more like..

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@faun shared a link, 1 month, 2 weeks ago

Automating Terraform Imports with Configuration Generation Using Claude Code

Terraform v1.5 debuts anexperimental flag,-generate-config-out. It grabs configs duringresource importand spits out raw HCL. Teams stash assets in animportblock, trigger the flag, then polish the generatedmain.tf. IaC onboarding feels like a sprint...

Automating Terraform Imports with Configuration Generation Using Claude Code
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@faun shared a link, 1 month, 2 weeks ago

SQL Injection as a Feature

Over ten years, the legacy report page mutated from a locked-downSQLform. It ended up as a hidden console spilling raw database guts. Developers swapped hardcoded queries fordatabase-drivenreport names. They slapped ontimeouts,string filters, and warnings but skipped restoring safe defaults. Implic..

SQL Injection as a Feature