ConvertKit (Kit)
Kit, formerly ConvertKit, is web-based email marketing software for creators, newsletters, audience growth, automations, and digital product sales.
$0 / monthList of API Software | Last updated: October 18, 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.
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.
These links use TechZella's existing product-to-taxonomy relationships. They are navigation aids, not independent endorsements.
| # | Software / Tool | Best For | TechZella Score | User Rating | Pricing |
|---|---|---|---|---|---|
| 1 | Ramp | Ramp combines corporate cards with expense management, bill payments, procurement, and accounting… | 8.5/10 | — | $0 / $15 per user/month plus a platform… |
| 2 | Brex | Brex combines corporate cards, expense management, bill pay, reimbursements, travel and business… | 8.4/10 | — | $0 / $12 |
| 3 | Navan | Navan combines corporate travel booking, expense management, payments, and spend reporting in… | 8.3/10 | — | $0 / $15 per active user |
| 4 | Payhawk | Payhawk is a cloud-based spend management platform for corporate cards, expenses, reimbursements,… | 8.2/10 | — | $299 / $449 |
| 5 | Rydoo | Rydoo is cloud-based expense management and accounts payable software for capturing, approving,… | 8.1/10 | — | $9 per user / $11 per user |
| 6 | Soldo | Soldo combines business payment cards, spend controls, receipt capture and reporting in… | 8.1/10 | — | £27 / £39 |
| 7 | Spendesk | Spendesk is a cloud spend-management platform combining company cards, expense reimbursements, invoice… | 7.7/10 | — | Custom quote |
| 8 | Airbase | Airbase combines guided procurement, accounts payable automation, expense management, and corporate cards… | 7.6/10 | — | Request a quote |
| 9 | SevDesk | Sevdesk is cloud accounting software for freelancers and small businesses, with invoicing,… | 7.6/10 | — | €0 / From €11.90 |
| 10 | FastBill | FastBill is cloud accounting and invoicing software for German freelancers and small… | 7.0/10 | — | €10 monthly; €9/month with annual billing / €15… |
Kit, formerly ConvertKit, is web-based email marketing software for creators, newsletters, audience growth, automations, and digital product sales.
$0 / monthBrevo is a multichannel customer engagement platform combining email, SMS, WhatsApp, CRM, automation, transactional messaging, and conversations.
$0 / month
MailerLite is a web-based email marketing platform for newsletters, campaigns, subscriber forms, landing pages, and automated email workflows.
$0 / monthGetResponse is a web-based email marketing and lifecycle automation platform with landing pages, ecommerce tools, webinars, courses, and AI-assisted campaign creation.
$0 / ongoingKlaviyo is a B2C CRM platform for customer data, email, SMS, mobile push, WhatsApp, analytics, service and AI-assisted marketing automation.
$0 / monthModular enterprise software for freight benchmarking, procurement, booking, shipment management, and supply chain visibility.
Contact sales / CustomProject44 is a cloud supply chain platform for shipment visibility, transportation management, yard operations, predictive ETAs, and logistics analytics.
Contact sales / CustomFourKites is a cloud supply chain visibility platform for tracking freight, predicting arrivals, managing exceptions and coordinating yards.
Dashlane is a password manager and credential security platform for individuals, families, and organizations.
/ yearOpen-source password manager for individuals, teams, and enterprises with encrypted vaults, autofill, sharing, passkeys, APIs, and self-hosting.
$0 / month