Alternatives
10 best PropelAuth alternatives
Tools that cover the same task as PropelAuth (code), ranked by how completely their pricing, free tier and API access are documented. Checked Oct 4, 2026.
- PropelAuth starts at
- $150/mo
- Free plan
- Free plan
- API
- API available
- 01
FACEIO
FACEIO is a passwordless facial authentication SDK for websites and apps, combining face recognition, liveness detection, and age verification through a browser widget and REST API. Developers enroll users once and authenticate them with face scans instead of passwords.
Best for: Web developers who need cross-browser face login, liveness checks, or age gates without building biometrics in-house.
- 02
Better Auth
Better Auth is a TypeScript authentication framework that lives in your application code with plugins for sessions, social login, organizations, passkeys, API keys, and enterprise SSO. The vendor also sells managed infrastructure with dashboards, audit logs, and security detections while the core framework stays open source.
Best for: Developers building Next.js, Nuxt, SvelteKit, Hono, and other TypeScript apps who want composable auth in code plus optional hosted infrastructure.
- 03
Bubble
Bubble is a visual no-code platform for building web and mobile applications with databases, workflows, design tools, and AI-assisted development in a hosted workspace.
Best for: Founders and product teams shipping full-stack apps without traditional code who need Bubble-hosted infrastructure.
- 04
Langfuse
Langfuse is an open-source LLM engineering platform for tracing, evaluating, and improving AI agents with collaborative debugging and metrics. Langfuse Cloud offers hosted Hobby, Core, and Pro tiers metered in observability units.
Best for: AI engineers who need open-source-friendly observability and eval workflows without building tooling in-house.
- 05
LangSmith
LangSmith is an enterprise LLM observability, evaluation, and monitoring platform built by LangChain.
Best for: Developers and engineering teams building LLM-powered applications and agents who need debugging, prompt optimization, latency tracking, and quality evaluation.
- 06
exchangerate.host
ExchangeRate.host provides a free forex and currency conversion API with optional paid subscriptions for higher request volumes.
Best for: Developers building multi-currency apps who need scalable rate limits beyond the free entry tier.
- 07
Context.dev
Context.dev is a web data API for AI agents and LLMs to scrape pages into Markdown, crawl sites, map domains, run batches, research the web, monitor changes, and retrieve brand data through one REST platform with SDKs and MCP support.
Best for: Developers building agents, RAG apps, or products that need fresh web content without running their own scraping infrastructure.
- 08
Build0
Build0 lets teams describe internal workflows in natural language and spin up secure, full-stack internal apps with connectors, RBAC, versioning, and managed secrets. It targets operations, sales, product, and engineering groups that need governed tools fast.
Best for: Teams prototyping internal tools and AI-assisted workflows without standing up a custom stack from scratch.
- 09
Thunkable
Thunkable is a no-code platform for building native iOS and Android apps with AI-assisted design and logic. Public pricing lists free exploration tiers plus paid Builder plans with AI tokens, private projects, live publishing, and support levels for founders, agencies, and education teams.
Best for: Founders, designers, and educators who want to ship mobile apps without hiring native developers.
- 10
AppWizzy
AppWizzy is a vibe-coding platform for building scalable web apps, SaaS products, admin panels, and AI chatbots with AI-assisted modifications, hosting, and templates. Pricing separates AI credits, hosting, and template licenses.
Best for: Startups and SMBs prototyping or shipping production web apps without assembling infrastructure manually.
PropelAuth alternatives: common questions
What is the best free alternative to PropelAuth?
FACEIO has an ongoing free plan. Freemium plan is free at 0 USD per application per month with a 1K face index cap and 35K API calls per month Free plans change, so check the vendor before relying on one.
What is the cheapest PropelAuth alternative?
exchangerate.host has the lowest listed starting price at $14.99/mo, compared with $150/mo for PropelAuth.
Which PropelAuth alternatives have an API?
FACEIO, Better Auth, Bubble, Langfuse, LangSmith mention API or developer access.