StackZero — Ranked Free Developer Tools
Updated weekly • 97 tools indexed
Ranked Free<br>Developer Tools
Opinionated scores across 15 categories — from PaaS and DBaaS to LLM APIs. Filter by Free Forever / No CC, compare head-to-head, export your stack.
15
Categories
97
Tools
Score axes
All<br>PaaS<br>DBaaS<br>CI/CD<br>Auth<br>Monitoring<br>Email<br>CDN<br>Design<br>Analytics<br>LLM APIs<br>APIs / ML<br>Testing<br>Security<br>DevOps<br>Productivity
Free forever • No CC
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Average Total Score by Category
Scores normalized to /100. Click a category pill above to drill into individual tools.
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Sorting help
Multi-column sorting
Click a column to sort.
Shift + click to add a secondary / tertiary sort. Click again to flip Asc / Desc, third click removes it.<br>Current sort order is shown as numbered badges.
Score /100
Sort:<br>Total<br>Generosity<br>DX<br>OSS<br>Scaling<br>Unlimited
Tool<br>Score<br>Generous<br>DX<br>OSS<br>Time<br>CC<br>TLS<br>Link
Compare mode — Radar
Add up to 4 tools with the “Compare” button
Axes: Generosity, Scaling, DX, OSS Friendly, Unlimited Apps, Depth.
Scores are 0–10 per axis. “Time / CC / TLS” are shown in the table — use the “Free forever • No CC” filter to only see zero-friction tools.
Tip: add tools from different categories to compare overall free-tier friendliness.
Head-to-Head
Tool A
Tool B
Metric<br>Winner
Select two tools from any category to compare pricing friction, DX, OSS friendliness, and more.
Scoring methodology
Copy schema
Each tool is scored 0–10 on 6 axes, for a 60-point total, normalized to /100 in the UI.
Generosity — Free-tier limits, usage caps
DX — Docs, CLI, SDKs, onboarding
OSS Friendly — Open source / self-host options
Scaling — Clear upgrade path, egress pricing
Unlimited — Unlimited projects / seats / apps
Depth — Feature completeness on free
Plus 3 friction flags: Time Bucketed (Forever / Trial), CC Required , TLS Free .
tool: "Example"<br>generosity: 9<br>scaling: 8<br>dx: 10<br>oss: 8<br>unlimited: 6<br>depth: 8<br>timeBucket: "forever" # forever | trial<br>ccRequired: "no" # yes | no<br>tlsFree: "yes" # yes | no<br>total: 49 # sum, max 60<br>score_100: 82 # total/60*100<br>source: "World Wide Web"