Listed alphabetically. A tool is ranked by its reviews once it has 3.
| Tool | Reviews | Lowest paid plan | Free plan | Free trial | Public API | Runs on | Main features |
|---|---|---|---|---|---|---|---|
 airSlate SignNowSign documents online, generate agreements, negotiate contracts, and accept payments with eSignatures | ReviewsNone yetWrite one for airSlate SignNow | Lowest paid plan$1.50per signature inviteSite License, as of October 23, 2026 | Free planNot confirmed | Free trial7 days | Public APIYes | Runs onWeb, iOS, Android | Main features
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 AttioThe CRM that builds pipeline, advances deals and grows accounts around the clock | ReviewsNone yetWrite one for Attio | Lowest paid plan$44Plus, as of October 19, 2026 | Free planYes | Free trial14 days | Public APIYes | ||
 BetterContactThe smart waterfall enrichment platform. 20+ providers, one bill, only verified data. | ReviewsNone yetWrite one for BetterContact | Lowest paid planNot confirmed | Free planNot confirmed | Free trialNot confirmed | Public APIYes | Runs onNot confirmed | Main features |
 BoldSignSimplify signing with secure, legally binding e-signatures at an affordable price | ReviewsNone yetWrite one for BoldSign | Lowest paid plan$5per sender per month, billed yearlyGrowth, as of October 23, 2026 | Free planYes | Free trial30 days | Public APIYes | ||
 Box SignBox Sign puts e-signatures right where your content lives. | ReviewsNone yetWrite one for Box Sign | Lowest paid planNot confirmed | Free planNot confirmed | Free trialNot confirmed | Public APIYes | Runs onWeb, Mobile | Main features |
 ClayInfrastructure to get any data, run agentic workflows and launch GTM plays | ReviewsNone yetWrite one for Clay | Lowest paid planSee plans | Free planYes | Free trial14 days | Public APIYes | ||
 CloseThe sales CRM built for calling, emailing, texting, automation and action | ReviewsNone yetWrite one for Close | Lowest paid plan$9per user per month, billed annuallySolo, as of October 20, 2026 | Free planNot confirmed | Free trial14 days | Public APIYes | ||
 CognismPrecise, compliant B2B data for the companies and decision-makers that matter | ReviewsNone yetWrite one for Cognism | Lowest paid planSee plans | Free planNot confirmed | Free trialNot confirmed | Public APIYes | Runs onNot confirmed | Main features |
 ContactOutFind emails and phone numbers for 350M professionals | ReviewsNone yetWrite one for ContactOut | Lowest paid plan$49per month, with US, Canada and UK contacts ($25 without them)Email, as of October 20, 2026 | Free planYes | Free trialYes | Public APIYes | ||
 CopperThe CRM that helps you be there for your clients, every step of the way | ReviewsNone yetWrite one for Copper | Lowest paid plan$23per seat per month, paid annuallyBasic, as of October 23, 2026 | Free planNot confirmed | Free trialYes | Public APIYes | ||
| CrunchbasePrivate company data and predictive intelligence to spot private market opportunities early. | ReviewsNone yetWrite one for Crunchbase | Lowest paid plan$49per month billed annually, or $99 billed monthlyPro, as of October 28, 2026 | Free planYes | Free trial7 days | Public APIYes | ||
 DocumensoFully compliant signatures out of the box. Ready to use or ready to be built upon | ReviewsNone yetWrite one for Documenso | Lowest paid plan$25per month, billed yearlyIndividual, as of October 23, 2026 | Free planYes | Free trialNot confirmed | Public APIYes | ||
 DocuSealFree and open source tool to streamline document filling and signing. | ReviewsNone yetWrite one for DocuSeal | Lowest paid plan$20per user per monthPro, as of October 28, 2026 | Free planYes | Free trialNot confirmed | Public APIYes | ||
 DocusignAnalyze agreements with AI, sign documents electronically, and automate workflows | ReviewsNone yetWrite one for Docusign | Lowest paid plan$11per month, annual commitment billed monthlyPersonal, as of October 23, 2026 | Free planNot confirmed | Free trialYes | Public APIYes | ||
 Dropbox SignSimplify eSignatures for every team | ReviewsNone yetWrite one for Dropbox Sign | Lowest paid plan$15per month, billed yearlyEssentials, as of October 23, 2026 | Free planNot confirmed | Free trial30 days | Public APIYes | ||
 DropcontactFinds, enriches, deduplicates and updates B2B contacts automatically, 100% GDPR compliant. | ReviewsNone yetWrite one for Dropcontact | Lowest paid planSee plans | Free planNot confirmed | Free trialNot confirmed | Public APIYes | Runs onGoogle Sheets | Main features |
 folkThe AI CRM your team needs to close deals and find your next clients | ReviewsNone yetWrite one for folk | Lowest paid plan$30per member per monthStandard, as of October 19, 2026 | Free planNot confirmed | Free trial2 weeks | Public APIYes | ||
 FreshsalesAn AI-powered, easy-to-use sales CRM to grow your pipeline and boost conversions. | ReviewsNone yetWrite one for Freshsales | Lowest paid planNot confirmed | Free planYes | Free trial21 days | Public APIYes | ||
 GMassGMass sends your newsletters, announcements, cold email campaigns, and transactional email from inside Gmail. | ReviewsNone yetWrite one for GMass | Lowest paid planNot confirmed | Free planNot confirmed | Free trialNot confirmed | Public APIYes | Runs onChrome, Gmail | Main features |
 HubSpot CRMFree CRM that unifies all your customer data on one platform, with AI that makes it easy to understand | ReviewsNone yetWrite one for HubSpot CRM | Lowest paid planSee plans | Free planYes | Free trialNot confirmed | Public APIYes | Runs on | |
 HunterThe all-in-one email outreach platform to find verified decision makers and turn them into leads | ReviewsNone yetWrite one for Hunter | Lowest paid plan$34per month, billed yearlyStarter, as of October 23, 2026 | Free planYes | Free trialNot confirmed | Public APIYes | ||
 InsightlyTrack all pipeline data in one place, auto-score leads and send follow-ups. | ReviewsNone yetWrite one for Insightly | Lowest paid plan$29per user per month, billed annuallyPlus, as of October 28, 2026 | Free planNot confirmed | Free trial14 days | Public APIYes | ||
 InstantlyTurn leads into clients with automated outreach, a B2B lead database, deliverability tools and an AI CRM | ReviewsNone yetWrite one for Instantly | Lowest paid plan$94per monthStarter, as of October 19, 2026 | Free planNot confirmed | Free trialNot confirmed | Public APIYes | Runs onNot confirmed | |
 KasprKaspr is a LinkedIn Chrome Extension and web app that gives you access to B2B contact data in seconds. | ReviewsNone yetWrite one for Kaspr | Lowest paid plan$49per user per monthStarter, as of October 28, 2026 | Free planYes | Free trialNot confirmed | Public APIYes | ||
 KeapSell more, follow up faster, and grow efficiently with the leading marketing and sales automation software. | ReviewsNone yetWrite one for Keap | Lowest paid planNot confirmed | Free planNot confirmed | Free trial14 days | Public APIYes | Runs onMobile app | |
 La Growth MachineRun outreach across LinkedIn, email and calls in one sequence, with a shared inbox and two-way CRM sync. | ReviewsNone yetWrite one for La Growth Machine | Lowest paid plan€50per identity per monthBasic, as of October 28, 2026 | Free planNot confirmed | Free trialNot confirmed | Public APIYes | Runs on | |
 lemlistFind verified contacts and engage them across every channel from lemlist, your CRM or your AI assistant | ReviewsNone yetWrite one for lemlist | Lowest paid plan$69per monthEmail, as of October 19, 2026 | Free planNot confirmed | Free trial14 days | Public APIYes | ||
 Less Annoying CRMSimple CRM for small businesses. | ReviewsNone yetWrite one for Less Annoying CRM | Lowest paid plan$15per user per monthEverything included, as of October 28, 2026 | Free planNot confirmed | Free trial30 days | Public APIYes | ||
 MailshakeEmail automation that lands in inboxes, gets replies, and books meetings. | ReviewsNone yetWrite one for Mailshake | Lowest paid plan$29per monthStarter, as of October 28, 2026 | Free planNot confirmed | Free trialNot confirmed | Public APIYes | Runs onNot confirmed | |
 MixmaxRuns every conversation you've started, inside your Gmail | ReviewsNone yetWrite one for Mixmax | Lowest paid plan$29per user per month, billed yearlyI reach out every week, as of October 20, 2026 | Free planYes | Free trialNot confirmed | Public APIYes | ||
 monday CRMA CRM that puts marketing, sales, and delivery on one platform, with AI removing friction. | ReviewsNone yetWrite one for monday CRM | Lowest paid plan$24per seat per monthBasic, as of October 29, 2026 | Free planNot confirmed | Free trial14 days | Public APIYes | ||
 NutshellAI-powered sales CRM and marketing automation | ReviewsNone yetWrite one for Nutshell | Lowest paid planNot confirmed | Free planNot confirmed | Free trialNot confirmed | Public APIYes | Runs oniOS, Android | Main features |
 OneflowOneflow helps teams manage the full contract lifecycle with AI, automation and connected workflows built in. | ReviewsNone yetWrite one for Oneflow | Lowest paid plan€ 250per month, billed annuallyBusiness, as of October 28, 2026 | Free planNot confirmed | Free trialNot confirmed | Public APIYes | Runs onNot confirmed | |
 OpenSignYour ultimate open source PDF E-Signature Solution. | ReviewsNone yetWrite one for OpenSign | Lowest paid planNot confirmed | Free planYes | Free trialNot confirmed | Public APIYes | Runs onNot confirmed | |
 OutreachAgentic AI platform for revenue teams to forecast, coach, close deals and expand accounts | ReviewsNone yetWrite one for Outreach | Lowest paid planSee plans | Free planNot confirmed | Free trialNot confirmed | Public APIYes | Runs onSlack | Main features |
 PandaDocFrom creation to signature to payment, a 360-degree document management solution | ReviewsNone yetWrite one for PandaDoc | Lowest paid plan$19per seat per month, billed annuallyStarter, as of October 23, 2026 | Free planYes | Free trial14 days | Public APIYes | ||
 PipedriveTrack your sales pipeline, optimize leads, manage deals with AI and automate your entire sales process | ReviewsNone yetWrite one for Pipedrive | Lowest paid planNot confirmed | Free planNot confirmed | Free trial14 days | Public APIYes | Runs oniOS, Android | |
 QuickMailCold email software that is easy to use, with automated follow-ups when there is no response. | ReviewsNone yetWrite one for QuickMail | Lowest paid plan$49per monthStarter, as of October 28, 2026 | Free planNot confirmed | Free trial14 days | Public APIYes | ||
 Reply.ioGenerate leads with multichannel sequences, automate follow-ups, and hire Sales AI agents | ReviewsNone yetWrite one for Reply.io | Lowest paid plan$49per user per month, billed annuallyEmail Volume, as of October 20, 2026 | Free planNot confirmed | Free trial14 days | Public APIYes | ||
 RocketReachVerified contact data to reach the right decision-makers, close deals faster, and hire top talent | ReviewsNone yetWrite one for RocketReach | Lowest paid plan$25per month, billed annuallyEssentials, as of October 20, 2026 | Free planNot confirmed | Free trialNot confirmed | Public APIYes | Runs onChrome extension | |
 SaleshandyYour complete multichannel outbound platform to book meetings every day | ReviewsNone yetWrite one for Saleshandy | Lowest paid plan$34per month, billed annuallyStarter, as of October 23, 2026 | Free planNot confirmed | Free trial7 days | Public APIYes | ||
 SalesloftPredictive revenue system that captures revenue signals across your stack and turns them into next steps | ReviewsNone yetWrite one for Salesloft | Lowest paid planNot confirmed | Free planNot confirmed | Free trialNot confirmed | Public APIYes | Runs onNot confirmed | Main features |
 Seamless.AIAI sales platform that delivers verified prospects, automated outreach and booked meetings | ReviewsNone yetWrite one for Seamless.AI | Lowest paid planNot confirmed | Free planNot confirmed | Free trialNot confirmed | Public APIYes | Runs onChrome extension | Main features |
 SigneasySign, send, store, and manage contracts on mobile, web, and API | ReviewsNone yetWrite one for Signeasy | Lowest paid plan$10per seat per month, billed yearlyPersonal, as of October 23, 2026 | Free planNot confirmed | Free trial14 days | Public APIYes | ||
 SignWellBusiness-grade eSignatures without the enterprise overhead | ReviewsNone yetWrite one for SignWell | Lowest paid plan$10per month, billed yearlyLight, as of October 23, 2026 | Free planYes | Free trialNot confirmed | Public APIYes | ||
 SmartleadCold email infrastructure that lands in the primary inbox, with AI agents for prospecting and follow up | ReviewsNone yetWrite one for Smartlead | Lowest paid plan$32per month, billed annuallyBase, as of October 20, 2026 | Free planNot confirmed | Free trialYes | Public APIYes | ||
 Snov.ioFind leads. Enrich them with emails & phone numbers. Send outreach campaigns | ReviewsNone yetWrite one for Snov.io | Lowest paid planNot confirmed | Free planYes | Free trialNot confirmed | Public APIYes | Runs onChrome extension | |
 StreakManage sales and customer relationships directly inside Gmail. | ReviewsNone yetWrite one for Streak | Lowest paid plan$49per user per month, billed annuallyPro, as of October 28, 2026 | Free planYes | Free trial14 days | Public APIYes | ||
 TwentyOpen source CRM for modern teams, modular, scalable, and built to fit your business | ReviewsNone yetWrite one for Twenty | Lowest paid plan$9per user per month, billed annuallyPro, as of October 20, 2026 | Free planYes | Free trial30 days | Public APIYes | ||
 UpLeadReal-time verified B2B emails, mobile numbers and intent data | ReviewsNone yetWrite one for UpLead | Lowest paid plan$99per month, billed monthlyEssentials, as of October 20, 2026 | Free planNot confirmed | Free trialNot confirmed | Public APIYes | Runs onChrome extension | |
 WaalaxyA simple LinkedIn outreach tool that helps you find prospects, send messages, and follow up automatically. | ReviewsNone yetWrite one for Waalaxy | Lowest paid plan$16per user per monthPro, as of October 28, 2026 | Free planNot confirmed | Free trial14 days | Public APIYes | ||
 WizaFind verified emails and phone numbers in seconds | ReviewsNone yetWrite one for Wiza | Lowest paid plan$49per user per monthStarter, as of October 28, 2026 | Free planYes | Free trialNot confirmed | Public APIYes | Runs on | |
 WoodpeckerAll you need for cold email and LinkedIn outreach in one place | ReviewsNone yetWrite one for Woodpecker | Lowest paid plan$29per month, for 1 LinkedIn accountLinkedIn, as of October 23, 2026 | Free planNot confirmed | Free trial14 days | Public APIYes | ||
 YoutrustGet electronic signatures, verification and e-seals from a European digital trust platform | ReviewsNone yetWrite one for Youtrust | Lowest paid plan€9per month, exclOne, as of October 23, 2026 | Free planYes | Free trial14 days | Public APIYes | ||
 Zoho CRMAI-powered online CRM that streamlines your customer operations within a single platform | ReviewsNone yetWrite one for Zoho CRM | Lowest paid plan$14per user per month, billed annuallyStandard, as of October 20, 2026 | Free planYes | Free trial15 days | Public APIYes | ||
 Zoho SignThe complete digital signature app for business signatories | ReviewsNone yetWrite one for Zoho Sign | Lowest paid plan$10per user per month, billed annuallyStandard, as of October 23, 2026 | Free planYes | Free trialNot confirmed | Public APIYes | ||
 ZoomInfoAI GTM platform with clean, accurate, compliant and actionable B2B data for every stage of your GTM motion | ReviewsNone yetWrite one for ZoomInfo | Lowest paid planSee plans | Free planYes | Free trialYes | Public APIYes |
From each tool's own website. “Not confirmed” means we couldn't confirm it there, not that the tool doesn't have it. Each tool's page says when its facts were checked.
How this list is made
A tool is listed here only when we've confirmed on its own website that it has a public API. Tools we couldn't confirm it for are left out, even if they may have it. Vendors can't pay for a place on this list. Add a tool we missed