SSealbook

Developer Tools & APIs

Sealbook lists 4,084 Developer Tools & APIs products. Common specialties: AI app builder, Web scraping API, PDF generation API, Screenshot API, Cloud infrastructure. Most vendors are based in United States (914), United Kingdom (86), Germany (74), Canada (42). 3,539 have a feature-by-feature check from their own website and 1,737 publish plan prices. Ranked by how widely known each product is and how much we could confirm — vendors cannot pay for position.

Ask the AI for a pick

OpenRelay

AI inference

Hosted model inference and GPU compute.

🇺🇸 United StatesAll sizes1 confirmed features

OpenSEO

SEO platform

Open source SEO platform for research and audits.

🇺🇸 United StatesAll sizes1 confirmed features

Orchestra

AI model optimization

Optimize AI workflows and models for production teams.

🇺🇸 United StatesAll sizes2 confirmed features

Pinnacle

Messaging API

Developer API for RCS, iMessage, MMS, and SMS.

🇺🇸 United StatesAll sizes7 confirmed features

Plasticity

NLP APIs

Natural language processing APIs for developers.

🇺🇸 United StatesAll sizes4 confirmed features

Plexe

Production AI

Production AI systems embedded in your product.

🇬🇧 United KingdomAll sizes3 confirmed features

Pomerado

Website to API

Turn websites into APIs or MCP servers for agents.

🇺🇸 United StatesAll sizes5 confirmed features

Prized

Cloud dev boxes

Cloud dev boxes and sandboxes for coding agents.

🇺🇸 United StatesAll sizes7 confirmed features

Replicas

Cloud coding agents

Run coding agents in cloud workspaces.

🇺🇸 United StatesAll sizes6 confirmed features

REV1

GD&T automation

AI automation for engineering drawings.

🇺🇸 United StatesAll sizes

Canary

AI code testing

Tests code written by agents.

🇺🇸 United StatesAll sizes1 confirmed features

RunInfra

Model APIs

Open model APIs for agent workloads.

🇺🇸 United StatesAll sizes7 confirmed features

Rystic

API simulators

Realistic API simulators for training and testing.

🇺🇸 United StatesEnterprise5 confirmed features

Sapling

Language model toolkit

API toolkit and assistant for enterprise communication.

🇺🇸 United StatesEnterprise2 confirmed features

Silmaril

Agent security

Security for AI agents that improves over time.

🇺🇸 United StatesAll sizes3 confirmed features

Smooth

Cloud browsers

Cloud browsers and web agents for AI.

🇬🇧 United KingdomAll sizes7 confirmed features

Specific

Agent infrastructure

Cloud platform for coding agents and infrastructure.

🇸🇪 SwedenAll sizes8 confirmed features

sudocode

Context management

Git-native context management for coding agents.

🇺🇸 United StatesAll sizes2 confirmed features

Superagent

Security automation

Autonomous security workers for software systems.

🇺🇸 United StatesAll sizes3 confirmed features

Superlog

Engineering automation

Automation for routine engineering tasks.

🇫🇷 FranceEnterprise1 confirmed features

Texel.ai

Media APIs

APIs for creating and editing media with AI.

🇺🇸 United StatesAll sizes3 confirmed features

The Hog

Web intelligence API

One API for web search, enrichment, and monitoring.

🇺🇸 United StatesEnterprise5 confirmed features

Trope

ERP AI agents

Deploy custom AI agents into your ERP.

🇺🇸 United StatesAll sizes1 confirmed features

UFO

Business agents

Business agent operating system.

🇺🇸 United States

Unsiloed AI

Document layer

Turn documents into JSON and Markdown for AI systems.

🇺🇸 United StatesEnterprise4 confirmed features

Kestrel AI

Platform engineering agents

AI agents for platform engineering teams.

🇺🇸 United StatesAll sizes6 confirmed features

Lemma

AI monitoring

Production monitoring for AI agents.

🇺🇸 United StatesAll sizes3 confirmed features

Salus

Runtime authorization

Runtime authorization for AI agents and tool calls.

🇺🇸 United StatesAll sizes1 confirmed features

Synth AI

Cloud research agents

Cloud agents for applied AI research.

🇺🇸 United StatesAll sizes2 confirmed features

Terse

Durable agent infrastructure

Durable infrastructure for agent workflows.

🇺🇸 United StatesAll sizes2 confirmed features

Vortexify

AI app builder

Build full-stack apps from operational data with AI.

🇺🇸 United StatesAll sizes4 confirmed features

withHuman

Approval layer

Add human approvals to AI agent actions.

🇬🇧 United KingdomAll sizes9 confirmed features

Sherpa

Website platform

Let teams and agents manage marketing websites.

🇺🇸 United StatesAll sizes4 confirmed features

Zatanna

Workflow APIs

APIs for software workflows used by AI agents.

🇺🇸 United StatesAll sizes2 confirmed features

Impractical

Motion design AI

An autonomous motion designer for launch videos.

🇺🇸 United StatesAll sizes3 confirmed features

Mineflow

Mineral exploration AI

AI for mineral exploration teams.

🇺🇸 United StatesAll sizes1 confirmed features

Chatter

LLM testing

Platform to build and test LLM prompts and chains.

🇺🇸 United StatesAll sizes3 confirmed features

Libra Logs

AI log monitoring

AI customer log monitoring for finding failures by customer.

🇺🇸 United StatesAll sizes

Wasp

Full-stack framework

Build full-stack web apps without boilerplate.

🇭🇷 CroatiaAll sizes5 confirmed features

Double

AI coding copilot

An AI coding assistant for developers.

🇺🇸 United StatesAll sizes
F

FastComments

Live commenting API

Live commenting and chat for websites and web apps.

All sizes6 confirmed features

Gold Feed

Precious metals API

Live precious metals pricing for stores and apps

All sizes2 confirmed features

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