PostgreSQL alternatives

PostgreSQL is listed under Dev Tools: Open-source relational database. We compare it with 15 other Dev Tools tools that have researched data. 15 of them offer a free plan or are free to use (8 open source), and 0 are paid only. PostgreSQL itself is free and open source.

Order: Sorted by how much you can use for free (free or open source first, then free plan with paid tiers, then paid only), then by the number of documented features, then alphabetically. No ratings or reviews are used.

Tool	Pricing	Free tier	Key features	Who it's for
PostgreSQL this tool	Free and open source	Yes	Open source object-relational database system Official documentation covers install and everyday use Numbered releases available to download, including beta previews	For people learning the system or running it for application workloads, including production.
GPTibo	Free and open source	Yes	Storefront for products, checkout, orders, and after-sales requests Admin for pricing, orders, refunds, partners, and notifications Partner desk with its own shop, branding, and custom domain	Developers self-hosting a digital-goods shop.
Notion	Freemium (free plan + paid tiers) Paid plans from $10 per member/month	Yes	Store notes, docs, and tasks in one workspace Search connected apps such as Slack and GitHub Agents complete multi-step tasks using workspace context	For individuals, small teams, growing businesses, and enterprises.
open_scion	Free and open source	Yes	Clients fetch single objects and sparse trees instead of a full clone Blame, path history, and code search run on the server Lands a change with compare-and-swap instead of a merge queue	Developers running source control for coding agents.
SkillSpector	Free and open source	Yes	Scans Git repositories, URLs, zip files, directories, or a single file Runs static checks and can add optional LLM semantic analysis Writes terminal, JSON, Markdown, or SARIF reports	Developers reviewing an AI agent skill before they install it.
Puter Everything	Free and open source	Yes	MIT monorepo that rebuilds proprietary apps as open-source alternatives Office apps include spreadsheet, documents, presentation, whiteboard, and PDF Also meetings, team chat, email, calendar, and other folders in src	Developers looking through Puter's open-source app rebuilds.
Agent Toolkit for AWS	Free No additional charge; pay only for AWS resources	Yes	Auto-detects your agents, installs skills, and configures the MCP server Managed MCP server for AWS CLI commands, docs search, and curated skills Covers 300+ AWS services and 15,000+ API actions through one tool	Developers whose coding agents build and manage applications on AWS.
DigUp	Free and open source	Yes	Searches photos, PDFs, documents, recordings, video, and code by what is in them Runs entirely on your computer on Mac, Windows, and Linux Uses Google DeepMind's EmbeddingGemma 2 across text, image, audio, and video	People who want to search the files on their own computer.
Handwired	Free and open source	Yes	Transforms if-else, loops, and state into matrix multiplication and ReLU The weights are written by hand, so the net does not need training The whole program stays differentiable	Developers turning ordinary JavaScript into a differentiable net.
Astro	Free and open source	Yes	Renders components on the server and ships only needed JavaScript Loads content from the filesystem, an external API, or a CMS Organizes Markdown and MDX with TypeScript frontmatter checks	Developers building content-driven websites such as blogs, marketing sites, and e-commerce.
PdfCraft	Free and open source	Yes	Renders complex scripts, vertical CJK, emoji, and transparency Search a document and copy text in reading order Rotate, delete, insert, and reorder pages with undo	—
Linear	Freemium (free plan + paid tiers) Paid plans from $10 per user/month, billed yearly	Yes	Turn chats and customer feedback into routed, labeled issues Plan work with initiatives, roadmaps, and up-to-date PRDs Assign issues to an agent that codes and opens pull requests	Product development teams that plan and build with people and AI agents.
Neon	Freemium (free plan + paid tiers)	Yes	Serverless Postgres with branching and separate storage and compute Managed user authentication included in every database Serverless functions that run beside the database	For developers building apps and agents that need a Postgres backend.
Obsidian	Freemium (free plan + paid tiers)	Yes	Save notes on your device as Markdown files, including offline Create links between notes and view them as a graph Research, brainstorm, and diagram ideas on a canvas	People who keep private notes, journals, knowledge bases, and projects.
PostHog	Freemium (free plan + paid tiers)	Yes	Stores analytics, errors, replays, and business data together Queries that data with SQL, charts, and visualizations Includes feature flags, experiments, surveys, and web analytics	Teams shipping products, from side projects to public companies.
Prisma	Freemium (free plan + paid tiers) Paid plans from $10/month	Yes	Type-safe ORM defined by a declarative schema Managed Postgres with a preview database per branch Hosts Node.js, Bun, or Next.js apps beside Postgres	TypeScript developers and coding agents building and deploying apps.

PostgreSQL alternatives: FAQ

What are the best PostgreSQL alternatives?

GPTibo, Notion, open_scion, SkillSpector, Puter Everything, Agent Toolkit for AWS, DigUp, Handwired, Astro, PdfCraft, Linear, Neon, Obsidian, PostHog, Prisma are the PostgreSQL alternatives in our directory that have researched data. They are ordered by how much you can use for free, then by documented features. No ratings or reviews are used, so the order is not a quality ranking.

Is there a free alternative to PostgreSQL?

GPTibo (free and open source), Notion (freemium (free plan + paid tiers)), open_scion (free and open source), SkillSpector (free and open source), Puter Everything (free and open source), Agent Toolkit for AWS (free), DigUp (free and open source), Handwired (free and open source), Astro (free and open source), PdfCraft (free and open source), Linear (freemium (free plan + paid tiers)), Neon (freemium (free plan + paid tiers)), Obsidian (freemium (free plan + paid tiers)), PostHog (freemium (free plan + paid tiers)), Prisma (freemium (free plan + paid tiers)). PostgreSQL is itself free and open source, Free tiers can change, so check each site.