Duckie AI
Software Development
Manage AI coding agents that get work done.
Like Rely.io, Duckie AI is in the Software Development category. Both are free-trial. Worth comparing on the detail page.
We've curated 46 of the best alternatives to Rely.io, ranked by feature overlap, topic similarity, user ratings, and popularity. Duckie AI, CodeMaker, and SharpAPI lead the list as the closest matches.
Updated May 18, 2026
The list includes 1 free alternative, 6 freemium, 2 paid, and 37 with a free trial, so whether you're looking for a no-cost replacement or a more capable paid tier, there's an option to compare. Rely.io itself is free-trial, which makes free-trial alternatives the most natural starting point.
Many of these tools cluster around use cases like Api, Software Development, Automation, and Code Review — the same problem spaces Rely.io addresses. Cross-referencing tools that overlap on multiple topics gives a more reliable signal than category alone, because two products in the same category can still serve very different workflows.
Our ranking weighs eight signals: shared category, topic overlap, feature overlap, name and description text similarity (via PostgreSQL's pg_trgm and tsvector), Bayesian-smoothed user ratings, pricing-model match, popularity, and editorial overrides. Scores are then normalized within each tool's own candidate pool so the top match always represents the strongest available alternative.
Use the table of contents below to jump to free or paid alternatives, or scroll down to compare each option side-by-side with Rely.io.
Ranked by compatibility score
Software Development
Manage AI coding agents that get work done.
Like Rely.io, Duckie AI is in the Software Development category. Both are free-trial. Worth comparing on the detail page.
Software Development
Supercharge developer productivity with AI automation.
Like Rely.io, CodeMaker is in the Software Development category. Both are free-trial. Worth comparing on the detail page.
1 free and 6 freemium options.
2 paid options.
2 paid alternatives to Rely.io on /tools/rely-io/alternatives.
22 additional candidates
Duckie AI ranks as the highest-scoring alternative to Rely.io, based on shared category, topic overlap, feature similarity, and user ratings. Ratings are still being collected for this tool.
Yes — 1 fully free and 6 freemium alternatives are available, including Koxy, Continue.dev, and Entelligence.
Duckie AI is similarly priced (free-trial) and sits in the same category (Software Development). View its detail page to compare features, integrations, and reviews side-by-side.
Top Software Development alternatives include Duckie AI, CodeMaker, SharpAPI, and Ellipsis. These tools share the same primary category and have meaningful topic overlap with Rely.io.
Software Development
AI-powered Swiss Army Knife API for developers
Like Rely.io, SharpAPI is in the Software Development category. Both are free-trial. Worth comparing on the detail page.
Software Development
Turn every engineer into a 10x engineer with AI
Like Rely.io, Ellipsis is in the Software Development category. Both are free-trial. Worth comparing on the detail page.
Software Development
Serverless Backend & AI Automations Low-Code Builder
Like Rely.io, Koxy is in the Software Development category. Koxy is freemium, while Rely.io is free-trial. Worth comparing on the detail page.
Software Development
Open-source autopilot for software development
Like Rely.io, Continue.dev is in the Software Development category. Continue.dev is freemium, while Rely.io is free-trial. Worth comparing on the detail page.
Software Development
Cut development costs by 10x with AI-powered microtasks
Like Rely.io, AntWorks is in the Software Development category. AntWorks is paid, while Rely.io is free-trial. Worth comparing on the detail page.
Software Development
AI mentor for your entire software engineering process
Like Rely.io, Entelligence is in the Software Development category. Entelligence is freemium, while Rely.io is free-trial. Worth comparing on the detail page.
Software Development
AI engine for complex coding tasks
Like Rely.io, Plandex is in the Software Development category. Plandex is freemium, while Rely.io is free-trial. Worth comparing on the detail page.
Software Development
Supercharge software development with AI
Like Rely.io, Senior AI is in the Software Development category. Senior AI is freemium, while Rely.io is free-trial. Worth comparing on the detail page.
Software Development
AI-powered SWE agent for faster, quality software shipping
Like Rely.io, Codeye is in the Software Development category. Codeye is free, while Rely.io is free-trial. Worth comparing on the detail page.
Software Development
Your AI-powered coding companion
Like Rely.io, Software Dev Expert is in the Software Development category. Software Dev Expert is freemium, while Rely.io is free-trial. Worth comparing on the detail page.
Software Development
Chat about your code—AutEng writes it for you
Like Rely.io, AutEng AI is in the Software Development category. AutEng AI is paid, while Rely.io is free-trial. Worth comparing on the detail page.
Images
Generated images from text prompts.
Deepdreamgenerator is a candidate alternative to Rely.io. Both are free-trial. Review its detail page to compare.
Task Automation
Turn customer data into business insights with AI
Einstein GPT is a candidate alternative to Rely.io. Both are free-trial. Review its detail page to compare.
Unit Tests
Autonomous AI writes Java unit tests
Diffblue Cover is a candidate alternative to Rely.io. Both are free-trial. Review its detail page to compare.
Investment Research
AI-powered stock market insights and analysis.
Kavout is a candidate alternative to Rely.io. Both are free-trial. Review its detail page to compare.
Seo Content
One-click AI for high-quality, SEO-optimized content.
Article Forge is a candidate alternative to Rely.io. Both are free-trial. Review its detail page to compare.
Videos
Generate videos from content in minutes with AI
GliaStudio is a candidate alternative to Rely.io. Both are free-trial. Review its detail page to compare.
Movie Pre Production
AI copilot for streamlined pre-production.
RivetAI is a candidate alternative to Rely.io. Both are free-trial. Review its detail page to compare.
Customer Support
Automate interactions with AI assistants
Kore.ai is a candidate alternative to Rely.io. Both are free-trial. Review its detail page to compare.
Text To Speech
Clone your voice with AI for realistic speech generation
Resemble.ai is a candidate alternative to Rely.io. Both are free-trial. Review its detail page to compare.
Music Editing
Remove vocals from any song instantly
Vocalremover is a candidate alternative to Rely.io. Both are free-trial. Review its detail page to compare.
Videos
Create AI videos with real actors in minutes.
Colossyan is a candidate alternative to Rely.io. Both are free-trial. Review its detail page to compare.
1 more free/freemium alternative listed below. Browse all Rely.io alternatives ↓
7 free or freemium alternatives to Rely.io on /tools/rely-io/alternatives.
Ava is a candidate alternative to Rely.io. Both are free-trial. Review its detail page to compare.
Neither Rely.io nor Duckie AI has user ratings yet — be the first to review either tool to help future visitors compare them.
