Best Lead Qualification Software in 2026
Updated
In short: Mixdesk is ranked #1 of 26 as of 4 October 2026, ahead of Apollo and Calendly. The best-ranked option with a free plan is Apollo. The lowest first paid tier on this page is Factors.ai at $0.50/mo.
Lead qualification software helps you assess prospective customers and determine what should happen next in a sales process. Compare qualification logic and intent signals with visitor identification, lead routing, and meeting booking. Conversation channels and lead limits help describe how prospects enter and move through the process, while free-plan availability and starting prices offer cost context. Apollo, Mixdesk, and Calendly are the first entries, followed by QualifyBase and Conversica. Consider which of these functions matter for how your team receives and follows up with leads, then compare the ranked options on their listed capabilities.
26 lead qualification software ranked on what their makers publish — plans and prices, free tiers, platforms and the facts on their own pages.
4 of the 25 here have a free tier you can use, 0 have open-source code on record, and 0 have full bars: free, open, on most of your devices and documented.
| # | App | Signal | Free tier | Open code | Devices | From | Score |
|---|---|---|---|---|---|---|---|
| 1 | MixdeskWeb · Android · iPhone · API | Three bars | — | 3 of 6 | $49/mo | 6.5 | |
| 2 | ApolloWeb · API · Extension | Two bars | — | 1 of 6 | $49/mo | 6.4 | |
| 3 | CalendlyExtension | Two bars | — | 0 of 6 | $10/mo | 6.4 | |
| 4 | Factors.aiWeb · API | One bar | — | — | 1 of 6 | $0.50/mo | 5.4 |
| 5 | Intentsify Intelligence Activation PlatformWeb | One bar | — | — | 1 of 6 | — | 5.4 |
| 6 | Talkover AIWeb | One bar | — | — | 1 of 6 | — | 5.4 |
| 7 | ConversicaWeb · API | One bar | — | — | 1 of 6 | — | 5.3 |
| 8 | DealfrontWeb | One bar | — | — | 1 of 6 | €199/mo | 5.3 |
| 9 | LimeCallWeb · Android · iPhone · API | Two bars | — | — | 3 of 6 | $7.50/mo | 5.2 |
| 10 | Patagon AIWeb | No signal | — | — | 1 of 6 | — | 5.2 |
| 11 | DemandbaseAPI | No signal | — | — | 0 of 6 | — | 5.1 |
| 12 | LeanData BookItWeb | No signal | — | — | 1 of 6 | — | 5.1 |
| 13 | WarmlyWeb · API | One bar | — | 1 of 6 | $99/mo | 5.1 | |
| 14 | BomboraAPI | No signal | — | — | 0 of 6 | — | 5.0 |
| 15 | ColdCalls.aiWeb | One bar | — | — | 1 of 6 | $20.79/mo | 5.0 |
| 16 | Common RoomWeb · API · Extension | One bar | — | — | 1 of 6 | $2,500/mo | 5.0 |
| 17 | inSale.aiWeb | One bar | — | — | 1 of 6 | £49/mo | 5.0 |
| 18 | QualifyBaseWeb · API | One bar | — | — | 1 of 6 | $40/mo | 5.0 |
| 19 | RevenueHeroWeb · Extension | One bar | — | — | 1 of 6 | $1.67/mo | 5.0 |
| 20 | TechTarget Priority EngineNo platforms listed | No signal | — | — | 0 of 6 | — | 5.0 |
| 21 | 6senseAPI | One bar | — | — | 0 of 6 | — | 4.9 |
| 22 | Chili PiperWeb | One bar | — | — | 1 of 6 | — | 4.9 |
| 23 | Factors.aiNo platforms listed | One bar | — | — | 0 of 6 | $199/mo | 4.9 |
| 24 | Qualified SignalsWeb · Android · iPhone | One bar | — | — | 3 of 6 | — | 4.8 |
| 25 | VerseWeb | No signal | — | — | 1 of 6 | — | 4.7 |
Is your app on this list?
Numbered spots on this list can be sponsored. They are labelled, and the editorial order and scores never change for payment.
Questions about this list
Which lead qualification software is ranked first on Freedom251?
Mixdesk is ranked #1 of 26 with a score of 6.5. Apollo is second and Calendly third.
How many of these have a free plan?
4 of the 25 on this page publish a free plan on their own pricing pages.
Which is the cheapest paid option?
On this page, Factors.ai has the lowest first paid tier we found: $0.50/mo.
How is this list ranked?
Ranked free-and-open first: a usable free tier and open-source code, then the platforms it runs on and its documentation. Paid placements never change a rank.