Code

Free plan

Browserbase

Code

Usage-based plans start free and scale to Developer and Startup tiers for production agent workloads.

• $20.00/mo · starting plan
• API available
• Checked Oct 4, 2026

Free plan

BrowserOS

Code

BrowserOS neo is a free, open-source browser built for AI agents such as Claude Code, Cowork, Codex, and Cursor. Agents drive a local browser with your logged-in accounts, run tasks in parallel, and support session replay while keeping browsing data on your machine.

• Free
• API unknown
• Checked Oct 4, 2026

Free tier unknown

Brushless

Code

Brushless is a creative production partner for high-volume marketing campaigns, delivering on-brand vector illustrations and layered campaign assets within about 24 hours. Services cover adaptations, versioning, localization, and editable layer files teams can adjust without reopening a design ticket.

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

Free tier unknown

Bryel

Code

Bryel helps companies train custom frontier models they own, using business-specific data across text, documents, images, audio, video, and sensors. The firm positions bespoke models as faster, cheaper, and sharper for specialized jobs than general-purpose LLMs.

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

Free plan

BTCPay Server

Payments

BTCPay Server is a self-hosted, open-source cryptocurrency payment processor for accepting Bitcoin and other payments with no platform fees. Merchants deploy their own instance or use a host, connect wallets and e-commerce integrations, and manage invoices, point-of-sale apps, and automation through the built-in API.

• Free
• API available
• Checked Oct 4, 2026

Free plan

BTWSO

Code

btw is an open-source personal website builder for blogs, notes, and profiles without coding or design skills. Hobby users publish on a btw.so subdomain for free, while Pro adds custom domains and priority feature requests for early adopters contacting the team.

• Free
• API unknown
• Checked Oct 4, 2026

Free plan

Bubble

Code

Bubble is a visual no-code platform for building web and mobile applications with databases, workflows, design tools, and AI-assisted development in a hosted workspace.

• $59.00/mo · starting plan
• API available
• Checked Oct 5, 2026

Free plan

Buck2

Code

Buck2 is Meta's open-source large-scale build system and successor to Buck, designed for fast, reproducible builds across big monorepos. The project site documents concepts, getting started guides, and comparisons for teams adopting remote execution and fine-grained caching.

• Free
• API unknown
• Checked Oct 4, 2026

Free plan

BuddyAI

Code

BuddyAI is a virtual safety companion that provides human-like phone conversations for people walking alone, aiming to reduce anxiety and deter unwanted attention. The service advertises 24/7 availability without installing a separate mobile app and includes emergency signaling features.

• Free
• API unknown
• Checked Oct 4, 2026

Free plan

BudiBase

Low-Code

Budibase helps teams build internal tools, automations, and AI agents on connected data with a low-code builder. Operations staff create apps, tables, and workflows that integrate databases, spreadsheets, and business APIs.

• $19.00/mo · starting plan
• API available
• Checked Oct 4, 2026

Free plan

BugBug

Testing

BugBug is a no-code end-to-end test automation tool for SaaS teams with a recorder, cloud runs, and BugBug MCP for AI agents. QA and engineering groups record stable regression suites, integrate CI/CD, and debug failures with reusable components.

• Free
• API available
• Checked Oct 4, 2026

Free plan

Bugfender

Error monitoring

Bugfender is a remote logging and error monitoring platform for mobile and frontend apps.

• $39.00/mo · starting plan
• API available
• Checked Oct 4, 2026

Free plan

Buggregator

Code

Buggregator is a free, open-source debugging server for PHP that aggregates exceptions, dumps, emails, profiling data, and logs in one UI. A single Docker run connects frameworks and libraries such as Sentry adapters, VarDumper, Monolog, and XHProf without requiring a cloud account.

• Free
• API unknown
• Checked Oct 4, 2026

Free plan

BugPin

Developer tools

BugPin is a self-hosted, open-source visual bug reporting widget for web applications. End users capture and annotate screenshots while the tool attaches console errors, network logs, and browser metadata, with SQLite storage and Docker deployment for privacy-first teams.

• $10.00/mo · starting plan
• API available
• Checked Oct 4, 2026

Free tier unknown

BugRaptors

Code

BugRaptors is an enterprise QA and software testing company offering AI-enhanced manual, automation, performance, security, web, mobile, and AI testing services. Its BugRaptors 2.0 messaging centers on AI code assurance, autonomous testing agents, and confidence scoring for releases.

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

Free plan

Bugsee

Mobile debugging

Bugsee is a mobile and cross-platform debugging service that records sessions on device when bugs occur. It bundles video replay, network traffic, console logs, symbolicated crash reports, and AI-assisted insights, then ships reports to integrations such as Jira, GitHub, and Slack.

• $99.00/mo · starting plan
• API available
• Checked Oct 4, 2026

Free plan

BugSnag

Code

BugSnag provides error monitoring, stability scores, and application performance monitoring for mobile and web clients. Teams use it to triage crashes, measure release health, and coordinate fixes with integrations into issue trackers and chat systems.

• Free
• API available
• Checked Oct 4, 2026

Free plan

Bugster

Code

Bugster is an AI-powered end-to-end testing platform where QA and engineering teams describe user flows in plain English and AI agents execute them in real browsers. It offers CLI and GitHub integrations, YAML test sync for IDEs, and suites runnable from CI or schedules.

• Free
• API unknown
• Checked Oct 4, 2026

Free plan

Bugzilla

Developer tools

Bugzilla is open-source issue tracking software for planning, organizing, and releasing software on a team schedule. It provides advanced search, product and component categorization, milestones, and workflows used by large open-source projects and enterprises.

• Free
• API unknown
• Checked Oct 4, 2026

Free plan

Build0

Code

Build0 lets teams describe internal workflows in natural language and spin up secure, full-stack internal apps with connectors, RBAC, versioning, and managed secrets. It targets operations, sales, product, and engineering groups that need governed tools fast.

• $35.00/mo · starting plan
• API unknown
• Checked Oct 4, 2026

Free trial

Buildable

Code

Buildable turns product ideas into AI-ready build plans, scaffolds private GitHub repositories, and streams MCP tasks to coding assistants. Solo developers and teams get Kanban tracking, CI-aware cards, and exportable plans without language lock-in.

• $15.00/mo · starting plan
• API available
• Checked Oct 4, 2026

Free tier unknown

BuildAI.Space

Code

BuildAI lets users describe apps in natural language and generates working web apps with hosting, digital employee agents, and payment integrations on paid tiers. Monthly plans scale builder messages, AI credits, and published app limits from Rocket through Galaxy.

• $25.00/mo · starting plan
• API unknown
• Checked Oct 4, 2026

Free plan

Buildkite

CI/CD

Buildkite is a CI/CD platform for running flexible pipelines on your own agents or Buildkite-hosted compute. It combines dynamic pipelines, test optimization, package registries, and mobile delivery tooling so engineering teams can build, test, and deploy at scale.

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

Free plan

Build Or Not

Code

Build Or Not is a startup research platform that combines AI tool traffic trends, backlink datasets, AI model listings, and startup revenue signals so builders validate ideas before investing engineering time.

• $20.00/mo · starting plan
• API unknown
• Checked Oct 4, 2026

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