Brevo (formerly Sendinblue)
Brevo is a cloud-based marketing and CRM platform for email campaigns, automation, transactional messaging, and customer engagement.
$0 / monthList of REST API Software | Last updated: October 13, 2026
This page lists the 51 tools in the TechZella directory that are classified under REST 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 Acronis Cyber Protect, Browse AI, Egnyte, Gladia, Keycloak, Rapid7 InsightIDR, Speechmatics and TranscribeMe; the list is alphabetical and does not imply a ranking. Across these tools the industries most often documented are Healthcare, Education, Retail, Financial Services. The most common documented use cases are Order fulfillment, Order management, Sales pipeline management, Audio transcription. Tools here are most often also filed under Speech-to-Text Software, Supply Chain Management, Transcription Software, CRM Software. 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 51 tools in the TechZella directory that are classified under REST 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 Acronis Cyber Protect, Browse AI, Egnyte, Gladia, Keycloak, Rapid7 InsightIDR, Speechmatics and TranscribeMe; the list is alphabetical and does not imply a ranking. Across these tools the industries most often documented are Healthcare, Education, Retail, Financial Services. The most common documented use cases are Order fulfillment, Order management, Sales pipeline management, Audio transcription. Tools here are most often also filed under Speech-to-Text Software, Supply Chain Management, Transcription Software, CRM Software. 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.
Browse the current directory listings and open individual profiles for detailed feature, pricing and evidence information.
| # | Software / Tool | Best For | TechZella Score | User Rating | Pricing |
|---|---|---|---|---|---|
| 1 | Buttondown | Buttondown is a browser-based newsletter platform for writing, managing, and sending email… | 8.2/10 | — | $0 / Varies by active subscriber count |
| 2 | Brevo (formerly Sendinblue) | Brevo is a cloud-based marketing and CRM platform for email campaigns, automation,… | 7.9/10 | — | $0 / From $9 |
| 3 | Squidex | Squidex is an open-source headless CMS for modeling and managing structured content,… | 7.8/10 | — | Free / €19 |
| 4 | Flotiq | Flotiq is a managed headless CMS with customizable content models and automatically… | 7.7/10 | — | $0 / $37 |
| 5 | Letterhead | Letterhead provides newsletter production, audience management, analytics and monetization tools. Studio layers… | 7.6/10 | — | See pricing |
| 6 | Cockpit CMS | Cockpit CMS is a self-hosted headless CMS with REST and GraphQL APIs,… | 7.5/10 | — | €0 / €299 |
| 7 | Mailcoach | Mailcoach is an email marketing platform for campaigns, newsletters, automations, and transactional… | 7.3/10 | — | €9.99 / €0 |
| 8 | Audienceful | Audienceful is a web-based email marketing platform for newsletters, campaigns, signup forms,… | 7.2/10 | — | $0 / $29 |
| 9 | Bolt CMS | Bolt is an open-source PHP CMS for structured website content, Twig-based sites… | 7.2/10 | — | $0 |
| 10 | Curated | Curated is a newsletter publishing platform for collecting links, adding commentary, and… | 5.8/10 | — | $0 / $39 |
Brevo is a cloud-based marketing and CRM platform for email campaigns, automation, transactional messaging, and customer engagement.
$0 / month
Mailcoach is an email marketing platform for campaigns, newsletters, automations, and transactional email. It offers a hosted service and a self-hosted Laravel…
€9.99 / month
Letterhead provides newsletter production, audience management, analytics and monetization tools. Studio layers onto an existing email platform; Suite also includes audience and…
Buttondown is a browser-based newsletter platform for writing, managing, and sending email newsletters, with subscriber tools, integrations, and a REST API.
$0 / month
Audienceful is a web-based email marketing platform for newsletters, campaigns, signup forms, automations, and transactional email. It also provides a REST API…
$0 / month
Curated is a newsletter publishing platform for collecting links, adding commentary, and distributing email issues. It also offers searchable web archives, subscriber…
$0 / month
Bolt is an open-source PHP CMS for structured website content, Twig-based sites and headless delivery through REST and GraphQL APIs.
$0 / forever
Flotiq is a managed headless CMS with customizable content models and automatically generated APIs, documentation, and SDKs for delivering structured content to…
$0 / month
Cockpit CMS is a self-hosted headless CMS with REST and GraphQL APIs, flexible content models, localization, and optional Pro addons.
€0 / FreeSquidex is an open-source headless CMS for modeling and managing structured content, then delivering it to websites, apps, and other systems through…
Free / month