Code

Free tier unknown

Hemmelig

Code

Hemmelig.app lets users share secrets through encrypted messages that self-destruct after being read.

• Not listed
• API unknown
• Checked Oct 4, 2026

Free plan

herdr

Code

Herdr is an open-source agent runtime that keeps coding agents running in persistent terminals across machines and projects. It supports many agent CLIs, community plugins, and remote reconnection via install script on macOS, Linux, and Windows.

• Free
• API unknown
• Checked Oct 4, 2026

Free tier unknown

Herewe Studio

Images

Herewe Studio is a web-based 3D creation stack for building spatial games and metaverse experiences without traditional heavy render engines. The Framer site describes Herewe 3D Studio modeling, a spatial template ecosystem, and Herewe.Space for placing assets in shared environments.

• Not listed
• API unknown
• Checked Oct 4, 2026

Free tier unknown

Hermes 3

Research

Hermes 3 is an open frontier language model family from Nous Research emphasizing long context retention, multi-turn dialogue, roleplay, internal monologue, and agentic function calling. The model page situates Hermes 3 within Nous Research’s broader open-source Hermes and training releases.

• Not listed
• API unknown
• Checked Oct 4, 2026

Free plan

Hermes Agent

Code

Hermes Agent is Nous Research open-source, self-hosted AI agent with persistent memory, self-created skills, and a messaging gateway for Telegram, Discord, Slack, WhatsApp, Signal, email, and CLI. Users can install Hermes Desktop locally or optionally deploy hosted agents through Nous Portal.

• Free
• API available
• Checked Oct 4, 2026

Free plan

Hermes IDE

Code

Hermes IDE is a vendor-neutral desktop console for running multiple coding agents side by side with terminal-first workflows. Each task gets its own agent, terminal, and branch, with an inbox for approvals, turn-based review, and landing changes with undo across tools like Claude Code, Codex, Copilot, and custom commands.

• Free
• API unknown
• Checked Oct 4, 2026

Free tier unknown

Heroic Labs

Game backend

Heroic Labs builds the Heroic Game Stack for multiplayer and live-service games, including open-source Nakama, Hiro meta-game systems, Satori LiveOps, and managed Heroic Cloud hosting. The company targets game studios that need scalable backend infrastructure and operational tooling.

• $600.00/mo · starting plan
• API available
• Checked Oct 4, 2026

No free plan

Heroku

Cloud platform

Heroku is Salesforce’s cloud application platform for deploying, scaling, and operating web apps and workers without running your own servers. Teams use Git- and container-based deploys, managed data services, add-ons, and enterprise controls while Heroku handles runtime infrastructure.

• $5.00/mo · starting plan
• API available
• Checked Oct 4, 2026

Free plan

HeroTofu.com

Code

HeroTofu provides form endpoints and a form backend for static sites: point HTML forms at HeroTofu URLs to collect submissions via email, Slack, Zapier, spam filtering, and encrypted archives without server code.

• $14.99/mo · starting plan
• API available
• Checked Oct 4, 2026

Free plan

HeroUI

Code

HeroUI is an open-source React and React Native component library built on React Aria and Tailwind CSS v4. Documentation includes theming, migration guides, CLI tooling, and machine-readable docs via llms.txt, a Docs Agent API, and MCP packages.

• Free
• API available
• Checked Oct 4, 2026

Free tier unknown

Hessian

Code

Hessian forward-deploys engineers to automate business operations with AI agents on its end-to-end platform. The product UI spans workflows, runs, tasks, workers, queue groups, webhooks, and integrations managed per customer workspace.

• Not listed
• API available
• Checked Oct 4, 2026

Free plan

Hex

Code

Hex is the package manager and registry for the Erlang and Elixir ecosystem, hosting public open-source packages and private organization repositories. Teams publish dependencies, manage owners, and enforce dependency policies through Hex organizations.

• $9.00/mo · starting plan
• API unknown
• Checked Oct 4, 2026

Free plan

Heybounce

Email validation

Heybounce is an email validation service that verifies addresses in bulk or through an API to improve deliverability and sender reputation. Pricing is credit-based with pay-as-you-go packs and optional monthly subscriptions, and unknown verification results are not charged.

• $30.00/mo · starting plan
• API available
• Checked Oct 4, 2026

Free plan

HeyTensor

Code

HeyTensor provides a free PyTorch tensor shape calculator for 14 layer types plus a paid Tensor Preflight downloadable toolkit. Preflight traces local forward passes, emits HTML shape reports, and packages regression checks for PyTorch 2.8+ projects.

• Free
• API unknown
• Checked Oct 4, 2026

Free plan

Hibernate

Code

Hibernate ORM is the flagship persistence framework for mapping Java objects to relational databases with Jakarta Persistence compatibility. It provides querying, caching, auditing, and transaction integration for standalone and enterprise Java runtimes.

• Free
• API unknown
• Checked Oct 4, 2026

Free plan

highcharter

Code

Documentation covers hchart helpers, Shiny integration, themes, drilldown, and module plugins for motion and other Highcharts extensions.

• Free
• API unknown
• Checked Oct 4, 2026

Free to start

High Charts

Code

The vendor ships adaptive themes, framework integrations, accessibility tooling, and optional Highcharts Orbit analytics features for forecasting and anomaly detection on top of rendered charts.

• Not listed
• API available
• Checked Oct 4, 2026

Free plan

Highcharts

Assistant

It is free for designing and exploring charts, while publishing in production requires a commercial Highcharts license.

• Free
• API available
• Checked Oct 4, 2026

Free plan

Higress

Assistant

Higress is a CNCF Sandbox open-source AI gateway built on Istio and Envoy. It unifies LLM API access, MCP tool routing, security, traffic governance, and observability for AI agents and production inference workloads.

• Free
• API available
• Checked Oct 4, 2026

Free tier unknown

hiloop

Research

hiloop offers autoresearch as a service, running thousands of directed experiments against a customer-provided metric and scorer. Use cases span post-training eval climbing, inference optimization, synthetic RL environments, and signal-processing detection tasks.

• Not listed
• API unknown
• Checked Oct 4, 2026

Free tier unknown

Hilstart

Hardware

Hilstart automates electronics bring-up, validation, and firmware development by pairing design context with hardware tests run on Tracer equipment. Teams approve specifications and test plans, then Hilstart’s agent executes tests on real boards and reports results back to trackers.

• Not listed
• API available
• Checked Oct 4, 2026

Free plan

HimitsuShell

Code

HimitsuShell compiles shell scripts into obfuscated Linux binaries with an embedded interpreter, string encryption, debugger detection, and optional expiration dates. It targets embedded, IoT, and server operators who want to protect shell logic beyond basic shc packaging.

• Free
• API unknown
• Checked Oct 4, 2026

Free plan

Hirempire

Code

Hirempire is an AI-first recruitment platform that combines sourcing, AI screening, email automation, scheduling, and pipeline CRM in one workspace. It replaces multiple hiring tools with LinkedIn integration, candidate evaluation, and team collaboration features.

• Free
• API unknown
• Checked Oct 4, 2026

Free trial

Hiro

Security

Hiro provides agentic security operations that implement SOC 2 controls, remediate vulnerabilities, and prepare enterprise readiness evidence. Agents pull tasks from compliance platforms and scanners, open tested pull requests, deploy fixes, and monitor rollouts for connected systems like AWS, GitHub, and Okta.

• $500.00/mo · starting plan
• API unknown
• Checked Oct 4, 2026

Plan facts carry individual sources and check dates. Unknown values are excluded from required filters.