SAAS & TECH

The phone stack SaaS teams graduate to.

Per-seat AI. REST API. HubSpot and Zoho sync. SOC 2 Type II by default.

Start Trial →Pricing →
API + WEBHOOKSPER-SEAT AISOC 2 TYPE IIUS-READY
POST /v1/messages200 OK
// SMS 2FA via REST
const res = await softtop.sms.send({
to: "+1 415 555 0142",
from: "+1 800 555 0199",
body: `Your code: ${code}`,
});
res.id //"sm_4f83a2b91"
NODEPYTHONPHPRUBY
p99 · 184ms
WHAT SAAS NEEDS

What SaaS teams actually need.

REST
REST API and webhooks
Every call event, every SMS, every voicemail exposed via REST and webhook. Engineer-grade. Built for modern SaaS stacks.
AI
Per-seat AI Assistant
AI summaries, transcripts, and HubSpot or Zoho auto-log on every call.
TEAM
Team chat in the phone system
Channels, DMs, file sharing, and one-click voice or video escalation — all inside the business phone system. No Slack required.
INTEL
Conversation intelligence on demos
Every demo call transcribed, summarized, and searchable for pipeline review.
5DEV
Softphones across every device
iOS, Android, macOS, Windows, and browser. Same extension, every device.
SOC2
SOC 2 Type II audited annually
Vendor security questionnaires take an afternoon, not two weeks.
DEVELOPER API

APIs your engineers will actually use.

Typed SDKs in Node, Python, PHP, and Ruby. Every call event, SMS, and voicemail via REST and webhook — no abstraction layer.

OFFICIAL SDKS
Node.js
npm i @softtop/sdk
Python
pip install softtop
PHP
composer require softtop/sdk
Ruby
gem install softtop
Sandbox tenants with test numbers and webhook simulators — zero call cost.
GROWTH

Built for how modern tech companies grow.

Purpose-built for SaaS teams that move fast and need communications infrastructure to keep up.

Seed→IPO
SCALE
Graduate from WhatsApp and Google Voice.
Softtop covers phone, contact center, and AI — scales from Seed to IPO without re-platforming. Explore our unified platform.
1 day
SECURITY
Security reviews you pass the first time.
SOC 2 Type II audited. Vendor questionnaires take an afternoon, not two weeks.
Every call
REVENUE
Conversation intelligence for every demo.
Conversation intelligence on every demo — transcribed and searchable. Coach on real objections, not memory.
PRODUCT-GRADE AI

AI that respects how your product team ships.

Feature flags per tenant, staged rollouts, and per-account guardrails for AI behavior. Roll out the AI Receptionist to 5% of new signups and monitor drop-off. Ship new prompt libraries without a deploy. The AI stays as agile as the rest of your product stack.

AI Feature Flags · tenant: lumen-software
AI RECEPTIONIST · ROLLOUT CONFIG
signup_funnel_v2
5% rollout
qualifier_prompt_b
50% A/B
booking_guardrails
100%
sentiment_routing
Disabled

From SaaS teams

Built for how modern tech ships.

Series A through IPO — already running on Softtop.

10 min
To Live

"CRM sync with HubSpot was live in 10 minutes. Our engineering team pushed SMS 2FA through the Softtop API the same week. No vendor abstraction layer to fight."

D
David Kim
Head of Sales, Lumen Software
FAQ

SaaS, answered.

API, SDKs, HubSpot, SOC 2, and sandbox — the common ones.

Yes. REST API and webhooks included on qualifying plans. Typed SDKs in Node, Python, PHP, and Ruby.
Native two-way sync. Installs from the HubSpot App Marketplace in under five minutes.
Yes. Type II audited annually. Report available under NDA for enterprise security reviews.
Yes. Programmatic SMS for 2FA, onboarding, and transactional notifications via REST API. 10DLC registration handled.
Yes. Sandbox tenants with test numbers and webhook simulators for every API endpoint. No production call cost during integration testing.

The phone stack you graduate to.

14-day free trial. No credit card required.