Suggestions appear as you type. Use the up and down arrows to choose one and Enter to open it.

This page's audience our own tag's counts — open to see them
–Visits
–Page views
–Clicks to vendors
–Time on page
–Reading now
Clicks to vendors, by tool
  • –
Top countries
  • –
Devices
  • –

– · visits, page views and clicks counted by our own tag, which counts more than our checked analytics; every figure rounded down · how we count

Head-to-head · Predictive Dialer Software

OSDial vs DialB

  • Updated Oct 2026
  • Both researched from official sources
  • 4 checks side by side
Higher score OSDial #5 in Predictive Dialer Software 8.7/10 Free plan Free plan✓ 2 of 3 features Visit OSDial
DialB #7 in Predictive Dialer Software 8.4/10 Pricing on request ✓ 3 of 3 features Visit DialB

OSDial leads on 1 check, DialB on 0, and 3 are even. Who comes out ahead on the 4 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreOSDial · 8.7/10
  • Free planonly OSDial
  • Most featuresDialB · 3 of 3

OSDial scores higher on our rubric for predictive dialer software: 8.7 against 8.4 out of 10; our editors rank them #5 and #7.

OSDial offers free plan; DialB doesn't.

OSDial is the better fit for technical teams wanting open-source control. DialB is the better fit for compliance-focused predictive dialer teams.

  • OSDial fits best

    Technical teams wanting open-source control

  • DialB fits best

    Compliance-focused predictive dialer teams

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

Side by side

Feature OSDial 8.7/10 Visit ↗ DialB 8.4/10 Visit ↗
At a glance
Editor score 8.7 8.4
Ranking #5 in Predictive Dialer Software #7 in Predictive Dialer Software
Best for Technical teams wanting open-source control Compliance-focused predictive dialer teams
Pricing model Free Paid
Starting price Free plan —
Free plan ✓ (best) —
Free trial — —
Deployment Self-hosted Cloud
Platforms Web, Linux Web
Support Email, Phone, Tickets Email
Built for Small business, Mid-market, Enterprise Small business, Mid-market, Enterprise
Features OSDial 2/3 · DialB 3/3
Local presence ✓ ✓
Voicemail drop Not checked yet ✓ (best)
Call recording ✓ ✓
Specs
Dialing modes predictive, power, manual, adaptive, broadcast predictive, power, preview, manual
Agent limit Not checked yet Not checked yet
Parallel calls Not checked yet Not checked yet
CRM integrations Not checked yet Not checked yet
Our review
Pros
  • Five dialing modes, including predictive, adaptive, power, manual, and broadcast
  • Supports inbound, outbound, and blended calling with IVR and recording
  • Self-hosted open-source software with reporting and custom workflows
  • Predictive, power, preview and manual dialing modes
  • TCPA controls, consent tracking and compliance audit trails
  • Caller-ID reputation monitoring, local presence and DID scoring
Cons
  • Listed integrations are limited to Asterisk and QueueMetrics
  • Self-hosted deployment is based on CentOS and Asterisk
  • OSDial 4.0 is under development while Legacy Version 3.0 remains available
  • Pricing uses contact-sales quotes with per-seat and usage charges
  • Advanced compliance and HIPAA-ready controls require Enterprise
  • The platform is delivered through the web only
Our verdict

OSDial is an open-source predictive dialer for call and contact centers that need inbound, outbound, or blended calling. It supports predictive, power, manual, adaptive, and broadcast dialing, making it suitable for technical teams…

Read the review →

DialB is a cloud outbound calling platform for sales teams, contact centers, BPOs and regulated industries. Its dialing suite covers predictive, power, preview and manual modes, with blended inbound and outbound queues, answering-machine…

Read the review →
  1. OSDialPredictive Dialer Software 8.7Free plan
  2. DialBPredictive Dialer Software 8.4Pricing on request

Strengths and trade-offs

  • OSDial — where it wins

    • Five dialing modes, including predictive, adaptive, power, manual, and broadcast
    • Supports inbound, outbound, and blended calling with IVR and recording
    • Self-hosted open-source software with reporting and custom workflows

    Where it doesn't

    • Listed integrations are limited to Asterisk and QueueMetrics
    • Self-hosted deployment is based on CentOS and Asterisk
    • OSDial 4.0 is under development while Legacy Version 3.0 remains available

  • DialB — where it wins

    • Predictive, power, preview and manual dialing modes
    • TCPA controls, consent tracking and compliance audit trails
    • Caller-ID reputation monitoring, local presence and DID scoring

    Where it doesn't

    • Pricing uses contact-sales quotes with per-seat and usage charges
    • Advanced compliance and HIPAA-ready controls require Enterprise
    • The platform is delivered through the web only
  • OSDial8.7/10 · Free plan

    A broad self-hosted dialer for technical teams that need open-source control.

    Visit OSDialFull verdict →
  • DialB8.4/10 · Pricing on request

    A compliance-focused dialer with adaptive pacing, reputation controls and AI agents.

    Visit DialBFull verdict →

More comparisons

All predictive dialer software comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update