The open-source, low-code platform where developers build the internal tools their companies actually run on - and, increasingly, the AI agents that automate them.
Every engineer has built the same screen more than once - the admin panel to reset a password, the dashboard to check yesterday's orders, the internal form that saves someone in operations an hour a day. It is unglamorous work, and it never quite ends. In 2019, three engineers who were tired of rebuilding it - Abhishek Nayak, Arpit Mohan, and Nikhil Nandagopal - decided to build it once and give the code away. That decision became Appsmith.
Appsmith is an open-source, low-code platform for building internal software: admin panels, dashboards, CRUD apps, support consoles, and workflow automations. Instead of starting from a blank HTML file, a developer drags pre-built widgets - tables, forms, charts, buttons - onto a canvas, connects them to a database or an API, and wires up behavior with JavaScript. What used to take a week can take an afternoon.
The distinction that matters is the audience. Appsmith was built for people who can already code and simply want to move faster. There is a drag-and-drop canvas for speed, but there is also a built-in JavaScript editor for anywhere the canvas isn't enough, plus 45+ widgets, connectors to 25+ databases, and support for any REST or GraphQL API. Low-code, in Appsmith's telling, is not about hiding the code - it is about getting out of the way of the people writing it.
And because it is open source, the platform is yours to run. Teams can self-host Appsmith on their own infrastructure at no license cost, fork it, inspect it, and keep their data where they want it. That single property - ownership - is the thread running through the whole product.
"The idea started with a simple frustration: build user interfaces faster than plain HTML and CSS allowed."
Appsmith runs on an open-core model: a free, self-hostable engine at the center, with paid tiers layered on for the security and governance that larger organizations need.
The self-hostable low-code engine: 45+ drag-and-drop widgets, a built-in JS editor, and connectors to 25+ databases and any REST/GraphQL API.
Since 2019SAML/OIDC SSO, granular role-based access control, audit logging, Git version-control workflows, and SOC 2 compliance for regulated teams.
Since 2021Fully hosted Appsmith for teams that want the platform without running the infrastructure themselves.
Since 2021An AI layer that gives LLMs continuous context on a company's own data, so business teams can build assistants and automations without fine-tuning or custom RAG.
2025Internal software is a paradox. It is where companies actually operate - fulfillment teams, support agents, finance, HR all live inside custom tools - yet it rarely gets prioritized, because it never ships to a paying customer. So it gets built badly, or slowly, or not at all, and the backlog grows.
Appsmith attacks that backlog directly. By turning a data source plus a few widgets into a working app in an afternoon, it collapses the cost of building the unglamorous middle of a company's software. The result is that operations teams get the tools they need without a full engineering project behind each one.
Its customers are full-stack developers and engineering teams - often at startups, or at cost-conscious enterprises - who want to move fast, write JavaScript when they need to, and keep control of where their tools and data live. The open-source software has been downloaded more than five million times, with users at over a thousand enterprises across a hundred-plus countries.
The shortlist is long: internal admin panels, customer-support consoles, inventory and order dashboards, approval workflows, data-entry forms, analytics views, and increasingly AI-powered apps - chatbots, document-analysis tools, and intelligent workflow automations that plug into OpenAI, Google AI, or Anthropic.
Connects to 25+ databases · any REST/GraphQL API · 45+ widgets · built-in JS editor · Git version control
The low-code market for internal tools is crowded - Retool, ToolJet, Budibase, Bubble, Superblocks, Microsoft Power Apps. Appsmith's wedge is open source. It is widely regarded as the leading open-source alternative to Retool, trading a bit of out-of-the-box polish for freedom, extensibility, and no vendor lock-in.
Positioning drawn from public Appsmith-vs-Retool comparisons. Both approaches have their place - Appsmith bets that developers value ownership.
Appsmith has raised about $51.5M total. The 2022 Series B was a bet, from serious investors, that open source eats closed platforms in developer tooling.
Serial entrepreneur leading the company's strategy and enterprise push - Appsmith is the founding trio's third venture together.
Backend engineer whose frustration building UIs faster than plain HTML/CSS sparked the original idea.
Product and engineering leader shaping how the platform feels to the developers who use it every day.
Appsmith began in stealth inside Accel's Launchpad program before its open-source release. Engineering roots run through Bengaluru, India, with headquarters in San Francisco.
Nayak, Mohan, and Nandagopal start the company in stealth at Accel's Launchpad to solve their own internal-tool pain.
The platform gains traction with developers building admin panels and dashboards.
Canaan leads the Series A with Bessemer participating, funding growth of the open-source project.
Insight Partners leads a $41M round, bringing total funding to $51.5M.
Adoption reaches 1,000+ enterprises across 100+ countries with 5M+ downloads.
The company sharpens its focus on AI, releasing context-aware agents for business teams.
Product demos, tutorials, and founder talks live on Appsmith's channels.