Complete backend infrastructure with databases, auth, and APIs. Firebase and Supabase alternatives.
6 Tools Reviewed
Expert Curated
Regularly Updated
#1 Best Overall
Xano
Build production-ready backends with visual tools, code, and AI—no infrastructure needed.
Free / $85/mo
Free Tier
Xano is a backend-as-a-service platform that lets users build APIs, manage databases, and implement server-side logic through a visual builder without managing servers or writing extensive code. It targets app builders, agencies, and enterprise teams who need production-grade backends with built-in authentication, security, and scalability. The platform combines no-code visual development with the ability to write custom JavaScript for advanced use cases.
Pros
Free tier available for development and testing with no credit card required
Visual API builder with 90+ pre-written functions speeds up backend development significantly
Supports custom JavaScript (Lambda functions) for cases where visual tools aren't enough
Cons
Free plan has strict rate limits (10 requests per 20 seconds), limiting real-world testing
Paid plans start at $85/month, which is significant for solo developers or small projects
Vendor lock-in risk—backend logic is built within Xano's proprietary visual builder
Best for:Teams needing a scalable backend for apps without managing infrastructure
Secure authentication and authorization for apps, APIs, and AI agents
Freemium
Free Tier
Auth0 is a customer identity and access management (CIAM) platform owned by Okta that provides authentication, authorization, and user management for web, mobile, and API applications. It serves developers building B2B SaaS products, consumer-facing applications, and AI agent-powered tools, offering features like Universal Login, SSO, MFA, passwordless authentication, and fine-grained authorization with extensive SDK support across 30+ frameworks and languages.
Pros
Generous free tier supporting up to 25,000 external active users with core features included
Extensive SDK and quickstart library covering 30+ languages and frameworks for fast integration
Dedicated AI agent authentication capabilities including Token Vault and async authorization for emerging use cases
Cons
Paid tier pricing is not publicly transparent — requires contacting sales or signing up to see actual costs
Enterprise features like Self-Service SSO and Long Lived Sessions are locked to higher tiers
Action and Form limits on lower tiers (5 on Free, 10 on Essentials) can be restrictive for complex auth flows
Best for:Development teams needing production-ready authentication for web and mobile apps
AI search and retrieval platform for agentic, generative, and keyword search
Freemium
Algolia is an API-first search and retrieval platform that provides sub-20ms search responses for websites and applications. It combines keyword search, neural/vector search, AI ranking, personalization, and generative AI features in one platform. It is used by over 18,000 brands including e-commerce, SaaS, and media companies to power product discovery, site search, and recommendations.
Pros
Sub-20ms average response times with 70+ data centers across 17 global regions
Extensive SDK support covering JavaScript, Python, Ruby, PHP, Go, Swift, Android, and more
Flexible control for both developers (API) and business users (Merchandising Studio dashboard)
Cons
Usage-based pricing can become expensive at high search volumes, with overage charges per 1K requests
Advanced features like NeuralSearch, real-time personalization, and generative AI require the enterprise Elevate plan
Requires developer resources to implement and customize — not a plug-and-play solution for non-technical users
Best for:Development teams building fast, scalable search and product discovery experiences
The open-source Postgres development platform with auth, APIs, and realtime.
Free / $25/mo
Free Tier
Supabase is an open-source backend platform that provides a full PostgreSQL database, authentication, auto-generated REST APIs, serverless Edge Functions, real-time data subscriptions, file storage, and vector embeddings for every project. It targets developers building web and mobile applications who want a managed backend with the portability and flexibility of standard Postgres rather than proprietary databases.
Pros
Full Postgres database that is 100% portable — no proprietary lock-in
Comprehensive platform covering database, auth, storage, realtime, edge functions, and vectors in one service
Generous free tier suitable for prototyping and small production apps
Cons
Requires understanding of SQL and Postgres concepts — not a true no-code solution
Connection pooling and scaling require configuration knowledge (e.g., PgBouncer setup)
Some advanced features and higher resource limits are only available on paid plans
Best for:Developers and startups building apps fast who want an open-source Firebase alternative.
Stripe is a full-stack financial infrastructure platform that handles payments, billing, lending, card issuance, and money movement for businesses of all sizes. It serves over 135 currencies and processed $1.4 trillion in 2024, supporting companies from early-stage startups to enterprises like Amazon, Shopify, and Instacart.
Pros
Extensive global coverage with 135+ currencies and payment methods across 160+ countries
Highly reliable with 99.999% historical uptime for core services
Comprehensive product suite covering payments, billing, lending, issuing, and fraud prevention in one platform
Cons
Per-transaction pricing can become expensive at very high volumes without negotiating custom rates
Dispute fees (MXN 150 per dispute) are charged regardless of outcome on standard plans
Capital (lending) product is only available to select businesses based on Stripe history and payment volume
Best for:Developers and businesses needing flexible, API-first payment infrastructure
Enabling all companies to build fintech solutions with open banking APIs
Freemium
Free Tier
Plaid is a financial infrastructure platform that provides APIs for connecting consumer bank accounts to fintech applications. It supports account verification, transaction data retrieval, identity verification, fraud detection, payment initiation, and credit underwriting across 12,000+ financial institutions in 20 countries. It's used by over 7,000 fintech companies including Venmo, Robinhood, and Carvana.
Pros
Connects to 12,000+ financial institutions across 20 countries, providing broad coverage
Comprehensive product suite covering auth, transactions, identity, payments, and fraud in one platform
Free Launch tier lets developers start building and testing without upfront costs
Cons
Pricing for advanced products (Signal, Transfer, Layer, Protect) is not transparent and requires contacting sales
Some financial institutions may not be supported or may have limited data compatibility with certain apps
Primarily focused on U.S. and Canadian markets despite claiming 20-country coverage
Best for:Fintech developers needing bank account connectivity and financial data APIs
