If you're looking for a Neon alternative, Xata is worth a look. Xata is a serverless data platform that uses PostgreSQL and is designed to work within developers' existing workflows. It offers serverless Postgres with automatic scaling, large free tiers, no-downtime schema migrations, file storage, branching, full-text search with Elasticsearch, and AI integration. The service supports many frameworks and tools, and its free tier offers a lot of resources, so it's a good pick for projects that are still growing.
Another good alternative is Supabase, an open-source Firebase alternative that uses a Postgres database and includes user authentication, instant APIs, real-time subscriptions, storage, and vector embeddings. It supports Next.js, Svelte and Flutter, among other frameworks, and includes tools like a data management dashboard, table editor and built-in SQL editor. Supabase also offers a free tier with large limits, so it's a good starting point for developers.
Although SingleStore is geared more toward real-time data processing, it's a powerful option for petabyte-scale data sets with millisecond query performance. It can handle both transactional and analytical data in one engine and supports multiple data models. That can be useful for smart apps that need high-throughput data ingestion and streaming. Pricing is based on usage, with a free tier and standard/enterprise plans.
If you're looking for a low-code option, check out Backendless. The company offers a full range of tools to build and run high-performance apps, including a visual UI builder, codeless logic and direct API integration. It supports responsive apps for web and mobile, real-time database capabilities and customizable user management. Backendless offers flexible deployment options and integrates with a range of third-party services. Its pricing options range from a free tier to paid options, so it's a good option for projects with varying needs.