The Full-Stack Language That Remembers
One language. Zero configuration. Build complete web applications with a built-in database, 180 UI components, and AI — all in a single binary.
"É flîn nù" — "It Remembers Things" in Fongbé (Benin)
curl -fsSL https://flin.sh | bash47 Technologies Become 1
Job listings want React, Next.js, Prisma, PostgreSQL, Redis, Docker, and 41 more. What if you just needed FLIN?
One File. Complete Application.
Entity, functions, template — everything in a single .flin file. No imports, no build step, no configuration.
// Define your data entity Todo { title: text @required done: bool = false } // State newTitle = "" // Functions fn add() { todo = Todo { title: newTitle } save todo newTitle = "" } fn toggle(t: Todo) { t.done = !t.done save t } // Template — just HTML + {curly braces} <h1>Todos ({Todo.count})</h1> <form submit={add()}> <input bind={newTitle} placeholder="What needs doing?" /> <button>Add</button> </form> {for todo in Todo.all} <div> <input type="checkbox" checked={todo.done} change={toggle(todo)} /> <span>{todo.title}</span> </div> {/for}
Everything Built-In
No packages to install. No services to configure. Every feature ships in the binary.
Zero Configuration
Single binary. File-based routing. No webpack, no babel, no tsconfig, no package.json. Create a .flin file and run it.
Memory-Native Database
FlinDB ships inside the binary. WAL, CRC-32 checksums, file locking, auto-checkpointing. Define an entity, save it — done.
AI-Native
Mark a field as semantic text and it becomes AI-searchable. Built-in embeddings, vector search, RAG, and ask_ai() with 8 providers.
180 Components
FlinUI is embedded in the binary. <Button>, <Card>, <DataTable>, charts, e-commerce — zero imports, zero npm.
Built-in Auth
Session management, OAuth (Google, GitHub, Discord, Apple, LinkedIn), 2FA/TOTP, JWT, WhatsApp OTP — all native functions.
Admin Console
Every FLIN app ships with /_flin — an admin dashboard with entity browser, query editor, API docs, metrics, and logs.
The Database That Remembers Everything
FlinDB is embedded in every FLIN app. No installation. No connection strings. No migrations. Just define entities and save.
// 10 field types, 49 validators, enums enum Priority { Low, Medium, High, Critical } entity Task { title: text @required @minLength(2) done: bool = false priority: Priority = "Low" notes: semantic text // AI-searchable! @index(done, priority) @unique(title) } // Queries — chain freely Task.where(done == false).order_by("priority", "desc").limit(10) Task.where(priority == "Critical").count // Semantic search results = search "tasks about database optimization" in Task
Write-Ahead Log
CRC-32 checksums, auto-checkpointing, file locking. Production-grade durability.
Semantic Search
Mark any field as semantic text. Embeddings generated automatically. Search by meaning, not keywords.
49 Validators
@required, @email, @minLength, @one_of, @unique, @index — declare constraints, FLIN enforces them.
180 Components. Zero Imports.
FlinUI is embedded in the binary. Use any component like an HTML tag — no npm, no imports, no registration.
// No imports — just use them <Grid columns="3"> <StatCard label="Users" value="1,234" icon="users" /> <StatCard label="Revenue" value="$12K" icon="trending-up" /> <StatCard label="Orders" value="89" icon="shopping-cart" /> </Grid> <Card> <BarChart data="45,72,38,91,65" labels="Mon,Tue,Wed,Thu,Fri" /> </Card> <Icon name="check" size="24" color="green" /> // 1,675 Lucide icons embedded
Data Input
Input, Select, Checkbox, DatePicker, TagsInput, RichTextEditor
21 componentsData Display
Card, Badge, Avatar, Table, DataTable, Timeline, Calendar
18 componentsFeedback
Alert, Toast, Modal, Drawer, Progress, Skeleton, Spinner
17 componentsNavigation
Navbar, Sidebar, Tabs, Breadcrumb, Pagination, Menu
13 componentsLayout
Grid, Flex, Stack, Container, Row, Divider, Section
14 componentsCharts
BarChart, LineChart, PieChart, AreaChart, RadarChart, Heatmap
11 componentsE-Commerce
ProductCard, CartItem, CheckoutForm, OrderSummary, CouponCode
12 componentsTemplates
LoginForm, DashboardLayout, PricingTable, BlogLayout, FileManager
22 componentsJS/TS Developers: You Already Know 80%
FLIN accepts TypeScript-style types, console.log, .length, null, and the function keyword. Your muscle memory works.
Works the Same
string=textboolean=boolnull=nonefunction=fnconsole.log(x)=log(x)name.length=len(name)Delightfully Different
{ key: "val" } ["key": "val"]import X from Y→Not neededclass User {}→entity User {}await fetch()→http_get()SELECT * FROM→User.allnpm install→NothingThe FLIN Ecosystem
Everything you need to build, deploy, and scale — from install to production.
Install
One command installs FLIN on macOS, Linux, and Windows. Includes CLI, FlinDB, FlinUI, and all 420+ functions.
Template Hub
Browse and copy production-ready templates. Auth flows, dashboards, e-commerce — copy, don't install.
AI Assistant
Text-to-app, screenshot-to-code, auto-correction. Build FLIN apps with natural language.
FlinCloud
One-click deploy from GitHub. CDN, SSL, analytics, team management. Like Vercel, but for FLIN.
Academy
Structured courses, video tutorials, and certifications. From beginner to FLIN architect.
Documentation
86 learning guides, 420+ function references, component library docs, and example apps.
Ready to Build?
Install FLIN in seconds. Build your first app in minutes. Ship to production in hours.
curl -fsSL https://flin.sh | bash