Quick answer: Our top pick is OpenPhone (Quo), followed by KrispCall and Nextiva. Entry prices start near $12/mo. All 5 are compared below on price, strengths and the key trade-off of each, so you can match one to your needs.
Choosing the right tool here comes down to fit, not hype. This guide rounds up the 5 tools we'd actually recommend for Startups, with what each does best, what it costs, and who should pick it.
Each pick was judged on the job in this guide rather than a generic scorecard, weighing results, price and ramp-up time. Pricing is taken from public plans at the time of writing.
~$22.50/user/mo Basic, ~$33.33/user/mo Plus (annual); Pro tier higher
small-business
The picks, ranked
1. OpenPhone (Quo) Virtual Phone
Lightweight business phone and virtual number app (rebranded Quo) with shared numbers, team inboxes and AI call notes, popular with startups and SMBs. A strong default when startups is the priority.
Why it's on this list: A clean, startup-friendly business phone with shared numbers and a built-in AI agent (Sona). Built for startups and small teams wanting a simple shared business number with light AI.
Standout features:
Unlimited calling and texting within US and Canada
AI call summaries and transcripts on Business+
Standout strength: Simple, modern UX popular with startups and SMBs.
Worth knowing: Rebranded from OpenPhone to Quo in 2026.
Cloud telephony with virtual numbers in 100+ countries, unified call inbox and CRM integrations aimed at startups and SMBs. Picked here for how cleanly it handles startups.
Why it's on this list: Affordable cloud telephony with virtual numbers in 100+ countries. Built for startups and international SMBs needing local numbers across many countries.
Standout features:
Lightweight built-in CRM on Essential
Power dialer, bulk SMS and unlimited call recordings on Standard
Standout strength: Virtual numbers in 100+ countries for global presence.
Worth knowing: 100+ native CRM/helpdesk integrations from the Standard plan.
Business VoIP and AI customer-experience platform bundling voice, SMS, video and a built-in CRM, marketed on reliability and US-based support. Best suited to teams that care most about small-business.
Why it's on this list: Reliability-focused all-in-one with a 99.999% uptime SLA and US-based support. A natural fit for small and mid-sized businesses wanting an all-in-one voice/CX platform with strong support.
Standout features:
Business SMS (100/user on Core, 500/user on Engage), video meetings and team chat
Shared omnichannel inbox, call notes and file sharing
Easy-to-deploy small-business VoIP with low entry pricing, virtual receptionist and optional on-prem hardware for offices. Best suited to teams that care most about small-business.
Why it's on this list: Easy, low-cost small-business VoIP with a virtual receptionist on every plan. Built for budget-conscious small businesses wanting simple, contract-free phone service.
Standout features:
Small-business VoIP with virtual receptionist and ring groups (35+ features on Essentials)
Unlimited calling across US, Canada, Mexico and Puerto Rico
Standout strength: Low entry price (~$19.95/user) with no contracts.
Worth knowing: Essentials plan advertises 35+ features including a virtual receptionist.
Pricing: ~$19.95/user/mo Office, ~$24.95/user/mo Office Pro, ~$29.95/user/mo Office Pro Plus
Affordable VoIP for very small businesses with a choice of per-user or limited-minute plans and a wide set of included calling features. It stands out for small-business without a heavy setup cost.
Why it's on this list: Budget VoIP packing 50+ voice features and unlimited minutes for small teams. Aimed squarely at very small businesses on a tight budget wanting standard calling features.
Standout features:
Video conferencing and mobile/web apps
AI call routing and scheduling on Plus and Pro
Standout strength: AI call routing available from the Plus plan.
Worth knowing: Includes 50+ standard voice features.
Pricing: ~$22.50/user/mo Basic, ~$33.33/user/mo Plus (annual); Pro tier higher
Work backwards from the one job you most need done. Match it to the entry whose ‘why it's on this list’ lines up, sanity-check the pricing against your budget, then shortlist two and trial them on the same real task. Whichever clears your workflow with the least friction is your pick.
FAQ
What is the best option in this list?
For most people, OpenPhone (Quo) is the strongest all-round pick in this guide, but the right choice depends on your budget and exact workflow.
Are there free options?
These are mostly paid tools; most offer a trial or money-back window, so check each entry's pricing line above before you buy.
How were these tools chosen?
Each pick is judged on fit for the specific job in this guide — its real strengths, pricing and who it suits — using features and facts drawn from independent reviews and the vendors' own documentation, cited in Sources below.
How often is this guide updated?
We revisit pricing and rankings regularly as vendors change plans and ship features.
Sources
The features, strengths and facts cited for each pick above are drawn from these independent reviews and vendor pages: