Feature flags that get out of your way. Open source, dead simple, and your first flag ships in 30 seconds.
Pick your favorite install method. No email required to sign up.
# Install CLI (works on macOS & Linux)
curl -fsSL https://flaglite.dev/install.sh | sh
# Sign up (no email needed!)
flaglite signup
# Create your first flag
flaglite flags create dark-mode --enabled# Install via Cargo (Rust)
cargo install flaglite
# Sign up (no email needed!)
flaglite signup
# Create your first flag
flaglite flags create dark-mode --enabledInstall the SDK for your language and evaluate flags in 3 lines.
npm install flagliteimport { FlagLite } from 'flaglite';
const flags = new FlagLite({ apiKey: 'flg_...' });
if (await flags.enabled('dark-mode', { userId: user.id })) {
enableDarkMode();
}pip install flaglitefrom flaglite import FlagLite
flags = FlagLite(api_key="flg_...")
if flags.enabled("dark-mode", user_id=user.id):
enable_dark_mode()go get github.com/faiscadev/flaglite-goimport "github.com/faiscadev/flaglite-go"
flags := flaglite.New("flg_...")
if enabled, _ := flags.Enabled("dark-mode", userID); enabled {
enableDarkMode()
}cargo add flagliteuse flaglite::FlagLite;
let flags = FlagLite::new("flg_...");
if flags.enabled("dark-mode", &user_id).await? {
enable_dark_mode();
}# Great for scripts, CI/CD, and automation
# Evaluate a flag
flaglite flags eval dark-mode --user-id user-123
# Use in a bash script
if flaglite flags eval dark-mode --user-id $USER_ID --quiet; then
echo "Dark mode enabled!"
fi
# JSON output for parsing
flaglite flags eval dark-mode --user-id user-123 --format jsonOne SDK. One API call. No PhD required.
$19/month flat. Not $19 per 1,000 users.
SDKs for JS, Python, Go, Rust. Clean REST API.
AGPL-3.0 licensed. Self-hostable. No vendor lock-in.
| FlagLite | LaunchDarkly | DIY | |
|---|---|---|---|
| Setup time | ~30 seconds | Hours | Days |
| Price | Free / $19/mo | $$$$ + MAU | Free + your sanity |
| Self-hostable | ✓ | ✗ | ✓ |
| Complexity | Flags + rollouts | Kitchen sink | Whatever you build |
No MAU tax. Ever.
Get started instantly
For growing teams
Your servers, your rules
FlagLite runs anywhere Docker runs. Full source code, AGPL-3.0 licensed, zero vendor lock-in.
Read the self-hosting docs →git clone https://github.com/faiscadev/flaglite
cd flaglite
docker compose up -d