No Twilio
callytics runs a full SIP stack on your own server. No API keys, no per-minute charges, no vendor dependency. Your calls never leave your infrastructure.
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OPEN SOURCE · SELF-HOSTED
Self-hosted programmable call center
docker compose up and you have a full call center with IVR builder, SIP trunks, live dashboard, and recordings — no Twilio account needed.
docker compose up -dAsterisk 20 · ARIPostgreSQL 15Redis Pub/SubMIT License
POSITIONING
Built different from FreePBX
FreePBX is a PBX admin tool. callytics is a programmable telephony platform for developers.
| FreePBX | callytics |
|---|---|
| Install method: ISO on bare metal | Install method: docker compose up -d |
| Call logic: Static dialplan files | Call logic: ARI + Stasis, database-driven |
| Live changes: Reload required | Live changes: Instant — no restart |
| Developer API: None | Developer API: REST API + WebSocket events |
| Outbound dialer: Paid module | Outbound dialer: Included free |
| Remote workers: Port forwarding | Remote workers: WireGuard VPN, QR code provisioning |
| SIP firewall: None | SIP firewall: Built-in, GeoIP blocking |
Visual IVR Builder
Build call flows on a React Flow canvas. Each node — play audio, collect digits, route to queue, transfer, run a webhook — is wired visually. Flows are stored in PostgreSQL and apply to live calls the moment you publish.
One Command Install
A single docker compose up -d starts Asterisk, the Stasis execution engine, NestJS API, PostgreSQL, Redis, and the React frontend. No ISO installs, no bare metal provisioning.
FEATURES
Everything a call center needs
IVR Flow Builder
Drag and drop nodes onto a canvas to design your call flow. Connect a menu node to business hours logic, fallback to voicemail, or escalate to a live queue. Publish and the change takes effect on the next incoming call.
Queues & Operators
Route inbound calls into named queues. Operators log in and out of queues from the dashboard. The queue engine tracks wait time, abandonment, and live agent state in Redis — no database polling on the hot path.
Outbound Campaigns
Upload a CSV of numbers and launch a campaign. The sliding window dialer controls concurrency — you set how many simultaneous calls to run. Failed calls are retried automatically based on your retry policy.
WireGuard VPN
Remote agents connect their SIP softphone through a WireGuard tunnel. You generate a peer config and QR code from the dashboard. Once connected the softphone registers as if it were on the local network — no port forwarding, no NAT problems.
SIP Firewall
callytics watches SIP REGISTER attempts and blocks IPs that exceed your threshold. Country-based blocking is built in using MaxMind GeoIP. Blocked IPs appear in the dashboard with options to whitelist or permanently ban.
Backup & Restore
Create a snapshot of your PostgreSQL database and recordings volume from the dashboard. Download the archive, store it offsite, and restore it with one click. Useful before upgrades or migrations.
ARCHITECTURE
How a call flows through callytics
Every inbound call passes through two planes. The control plane handles configuration, API requests, and database writes. The voice plane handles the real-time call — Asterisk bridges the SIP session, Stasis executes your published flow node by node, and Redis carries live telemetry back to NestJS.