Cybersecurity Software
Robtex
Robtex provides web-based DNS, IP, and network lookups, plus APIs for current and historical infrastructure data.
$0 / monthTechZella Directory
Software for API in 2026
List of API Software | Last updated: October 13, 2026
This page lists the 384 tools in the TechZella directory that are classified under API, a platform in our taxonomy. Every profile summarises what the product does, who it suits, what it costs, and where it falls short, based on documented vendor and independent sources rather than hands-on testing. Examples in this group include 1Password, Canva, Descartes Systems Group, Grammarly Business, Magento (Adobe Commerce), Otter.ai, Scribie and Trellix Endpoint Security; the list is alphabetical and does not imply a ranking. Across these tools the industries most often documented are Education, Professional Services, Financial Services, Healthcare. The most common documented use cases are Workflow automation, Sales pipeline management, Hybrid events, Team collaboration. Tools here are most often also filed under CRM Software, Webinar Software, Virtual Event Software, Cloud Storage. To compare options, open each profile and read the Decision Snapshot, the pricing and total cost sections, and the Gotchas, then check the alternatives listed for the products you are considering. Features, pricing and availability change, so confirm current details with each vendor before you decide.
Editorial guide
About API software
This page lists the 384 tools in the TechZella directory that are classified under API, a platform in our taxonomy. Every profile summarises what the product does, who it suits, what it costs, and where it falls short, based on documented vendor and independent sources rather than hands-on testing. Examples in this group include 1Password, Canva, Descartes Systems Group, Grammarly Business, Magento (Adobe Commerce), Otter.ai, Scribie and Trellix Endpoint Security; the list is alphabetical and does not imply a ranking. Across these tools the industries most often documented are Education, Professional Services, Financial Services, Healthcare. The most common documented use cases are Workflow automation, Sales pipeline management, Hybrid events, Team collaboration. Tools here are most often also filed under CRM Software, Webinar Software, Virtual Event Software, Cloud Storage. To compare options, open each profile and read the Decision Snapshot, the pricing and total cost sections, and the Gotchas, then check the alternatives listed for the products you are considering. Features, pricing and availability change, so confirm current details with each vendor before you decide.
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Explore API through related software needs
These links use TechZella's existing product-to-taxonomy relationships. They are navigation aids, not independent endorsements.
Directory
Software listed under API
Browse the current directory listings and open individual profiles for detailed feature, pricing and evidence information.
Quick comparison
API Software
| # | Software / Tool | Best For | TechZella Score | User Rating | Pricing |
|---|---|---|---|---|---|
| 1 | Concrete CMS | Concrete CMS is an open-source, PHP-based content management system for websites and… | 8.2/10 | — | $0 / $4.99 |
| 2 | DatoCMS | DatoCMS is a cloud-based headless content management system with GraphQL content delivery,… | 8.2/10 | — | $0 / From €149 |
| 3 | Kit (formerly ConvertKit) | Kit is a web-based email marketing platform for creators, with newsletters, audience-growth… | 8.1/10 | — | $0 / $39 per month; about $33 per… |
| 4 | beehiiv | beehiiv combines newsletter publishing, email marketing, audience-growth tools, and monetization features with… | 8.0/10 | — | $0 / $49 |
| 5 | Flodesk | Flodesk is a web-based email marketing platform for designing and sending campaigns,… | 8.0/10 | — | $0 / $19 annually; $25 monthly |
| 6 | Kirby | Kirby is a self-hosted, file-based CMS with a customizable browser Panel, PHP… | 7.9/10 | — | €99 / €349 |
| 7 | Mailjet | Mailjet is a web-based email marketing and delivery platform with campaign tools,… | 7.9/10 | — | $0 / $9 |
| 8 | Sendlane | Sendlane is a web-based email marketing platform with campaign tools, behavioral automations,… | 7.8/10 | — | $100 / $0 |
| 9 | Zesty.io | Zesty.io is a cloud CMS for creating, managing, and publishing structured content… | 7.7/10 | — | $0 / $475 |
| 10 | Substack | Substack combines email newsletter publishing, a hosted publication site, subscriber management, and… | 7.6/10 | — | $0 / 10% of subscription revenue plus Stripe… |
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Software for API in 2026
Cybersecurity Software
ViewDNS.info
ViewDNS.info provides browser-based DNS, domain, IP, and network lookup tools, plus APIs for integrating selected lookups into other workflows.
$0 / trial
Cybersecurity Software
DNSDumpster
DNSDumpster is a web-based reconnaissance service for finding domain-related hosts, DNS records, network details, and service banners. It also offers API access…
$0 / month
Developer APIs
WhoisXML API
A hosted REST API that returns domain, IP address, and email WHOIS registration data in structured formats. It is a data lookup…
$0 / one-time allowance
Marketing Automation
Salesforce Marketing Cloud (Pardot)
Salesforce Marketing Cloud Account Engagement, formerly Pardot, is a cloud marketing automation product for B2B lead generation, nurturing, scoring, and Salesforce-connected marketing…
$1,250 / organization/month
Collaboration Software
CrossBeam
Crossbeam helps B2B companies compare account data with partners, identify shared prospects and customers, and coordinate co-selling workflows.
$0 / forever
Content Management System
MarketPath
Marketpath CMS is a managed website content management platform with developer-controlled templates, publishing tools, APIs, and optional AI content features.
$0 / month
Project Management Software
Kantata
Kantata is cloud software for professional services teams, combining project delivery, resource planning, time and expense tracking, and financial management.
Contact Kantata / Not publicly listed
Project Management Software
Teamwork.com
Teamwork.com is cloud-based project management software for planning and delivering client work. It includes task management, time tracking, resource planning, and project…
$0 / month
Content Marketing Software
Optimizely Content Marketing Platform (Welcome)
Optimizely CMP is a cloud-based workspace for planning campaigns, creating content, coordinating approvals, managing assets, and connecting publishing workflows.
Quote-based