Best Developer Tools of June 2026

1. 1

   1. Spotlight by Backplanes

   393 upvotes

   Session reports for Claude Code & Codex to improve your code

   Keep up with your agents. Spotlight reads your Claude Code and Codex sessions and shows you what your agents actually did, and how to get recursively better every session: what to fix now, what to ship better next time, what's worth…

   #3 on June 10, 20261 maker
2. 2

   2. Respan Gateway

   340 upvotes

   One AI gateway with built-in observability and evals

   Respan AI Gateway connects your app to 1,000+ AI models through one endpoint. But routing is the easy part. Respan keeps production AI reliable and under control with fallbacks, retries, caching, spend limits, alerts, and full traces for…

   #3 on June 11, 20261 maker
3. 3

   3. Latitude

   338 upvotes

   Fix what's breaking in your AI agent

   Open-source AI agent monitoring platform. Latitude automatically detects all the ways your agents fail at scale, and gives your coding agent the tools to fix it.

   #4 on June 23, 2026latitude.so1 maker, 1 with an email
4. 4

   4. QApilot's CoWork

   322 upvotes

   3x Mobile Automation. Same QE Team.

   CoWork turns existing test cases into executable mobile automation with AI planning, human-approved replanning, and real-device execution on iOS, Android, and Flutter.

   #2 on June 27, 20261 maker
5. 5

   5. Agent 37 Cloud

   303 upvotes

   Give every customer their own Hermes or OpenClaw agent

   Agent 37 is managed hosting for persistent agents like Hermes, OpenClaw and ClaudeCode. So you don't need to run them on Mac minis or VPS yourself. One API call gives each of your customers their own always-on agent, from $3.44/mo.…

   #1 on June 21, 20261 maker
6. 6

   6. Empromptu AI

   281 upvotes

   Train Fine Tuned Models With AI Apps You're Already Building

   Most AI apps launch on someone else’s model and stay there forever. Empromptu AI turns live AI features into custom models you own. As your app runs, Empromptu AI captures real-world usage, human corrections, and edge cases from live AI…

   #3 on June 4, 20261 maker
7. 7

   7. Prometheus by Firecrawl

   246 upvotes

   A Forward Deployed Agent for web data.

   An experimental Forward Deployed Agent for web data from Firecrawl. Describe the web data you need and it writes Firecrawl code to collect it. Run it yourself or let us host and automatically maintain it as pages change.

   #3 on June 13, 2026firecrawl.com1 maker
8. 8

   8. ClinePass

   241 upvotes

   Run the best open-weights models in Cline

   ClinePass gives Cline users one $9.99/month subscription for top open-weight coding models like GLM, Kimi, DeepSeek, and more. Use powerful models inside Cline with 2–5x standard API rate limits, without juggling provider accounts, API…

   #3 on June 29, 20261 maker
9. 9

   9. Brief

   230 upvotes

   Navigate your agents to product-market fit

   AI agents can ship quickly, but without the right product context, they're often flying blind. Brief gives product teams a living source of truth that captures decisions, preserves product intent, and serves relevant context to humans and…

   #5 on June 2, 2026usebrief.com1 maker, 1 with an email
10. 10

    10. Firecrawl Research Index

    210 upvotes

    An index for agents pushing the frontier of AI/ML research

    AI/ML research moves fast, and the work that matters is split between new papers and the code that implements them. Most search providers omit or misrank key papers, leaving you to review sources by hand without ever being sure you've…

    #4 on June 19, 20261 maker
11. 11

    11. v0 Design Systems 2.0

    190 upvotes

    Build with your components, colors, fonts, and patterns

    v0 Design Systems 2.0 is here. You can now import your system from the sources your team already uses: GitHub repos, public and private npm packages, Storybook and docs, Figma frames, screenshots, ZIPs, and real apps. v0 learns how your…

    #6 on June 30, 20261 maker
12. 12

    12. Cloudflare Temporary Accounts

    187 upvotes

    Let agents deploy before signup

    The moment an agent needs to deploy something, it slams face-first into a wall built for humans. Today we're rolling out Temporary Accounts on Cloudflare Workers. Any agent can now run wrangler deploy — temporary and get a live Worker in…

    #6 on June 22, 20261 maker
13. 13

    13. Nemotron 3 Ultra by NVIDIA

    176 upvotes

    Powers faster, efficient reasoning for long-running agents

    A 550B MoE frontier-intelligence open model built for long-running agents. It delivers 5x faster inference and lowers the cost of complex agentic tasks by up to 30% versus other open frontier models.Ultra excels at complex tasks like…

    #7 on June 5, 2026
14. 14

    14. Spectron

    171 upvotes

    Agent memory you can trust

    Spectron is agent memory built on one ACID substrate. Graph, vectors, documents, and structured rows commit in one transaction. Every fact carries provenance. Corrections supersede, never overwrite. Hybrid retrieval fuses vectors, graph…

    #7 on June 3, 20261 maker
15. 15

    15. AgentPeek

    167 upvotes

    Your coding agents, in the Mac notch

    You're running more coding agents than ever, but you can't keep up with them. That's where AgentPeek comes in. It pulls every session up into your Mac notch, live. Glance up, approve a prompt, watch token usage and manage the entire flow…

    #9 on June 30, 2026agentpeek.app1 maker
16. 16

    16. Buy by Agentcard

    163 upvotes

    Order DoorDash from Claude

    you can now buy Doordash from Claude. connect Agentcard to your Openclaw, Claude or whatever you use, ask for what you want and we handle the rest. it feels magic. install from agentcard.sh and make your first order for free!

    #7 on June 24, 2026agentcard.ai1 maker
17. 17

    17. pumaDB

    159 upvotes

    a small hosted memory layer for AI agents

    Most AI agent workflows lose useful context between sessions, tools, and chats. The usual fixes are either too manual, like copying notes into docs, or too heavy, like setting up a database, vector store, or custom RAG stack. pumaDB gives…

    #5 on June 20, 2026pumadb.ai1 maker, 1 with an email
18. 18

    18. Polygraph

    158 upvotes

    Let AI agents see cross repo and maintain session memory.

    AI coding agents are limited to how autonomously they can work because they have no model of the codebase as a whole. Polygraph is a meta-harness that gives agents what they're missing: Visibility across every repo boundary and memory…

    #8 on June 25, 2026trypolygraph.com1 maker, 1 with an email
19. 19

    19. Bob's CLI

    149 upvotes

    A local-first AI coding CLI that adapts to you

    Bob's CLI runs on your own hardware with zero API costs, zero data leaving your machine. Bob lives in your terminal, sees your actual files, and writes code only with your explicit approval. What makes it different: auto-detect local AI…

    #6 on June 12, 20261 maker
20. 20

    20. Otty

    142 upvotes

    A Mac native and beautiful terminal emulator

    Otty is a native, GPU-accelerated terminal, designed for anyone who cares about the feel of every keystroke — minimal, fast, and beautiful. A terminal worth using on its own. And when you run several code agents like Claude Code or Codex…

    #11 on June 18, 20261 maker
21. 21

    21. StaleMate PR

    131 upvotes

    Your menu bar turns red when PRs pile up

    StaleMate is a tiny macOS menu-bar app that watches your GitHub & GitLab pull requests. The icon stays green when the queue is clean, fades yellow when reviews build up, and goes red when things start to rot. Up to 5 independent monitors.…

    #8 on June 24, 20261 maker
22. 22

    22. AEVS

    129 upvotes

    proof-of-execution for AI agents

    AEVS (Agent Execution Verification System) is a drop-in SDK that records every AI agent tool call and gives agents verifiable execution receipts. It captures the tool, inputs, outputs, status, and timing as tamper-evident proof, so teams…

    #9 on June 15, 20261 maker
23. 23

    23. Boxes.dev

    113 upvotes

    Run Claude Code and Codex in your own cloud environment

    Cloud dev environments for agentic coding. Run each Claude Code or Codex chat on its own computer in the cloud, connect from mobile and desktop, and code from anywhere.

    #13 on June 4, 2026YC F26boxes.dev1 maker, 1 with an email
24. 24

    24. DMV by Agent Community

    108 upvotes

    A community-governed namespace for AI agents

    Agent Community is building the identity layer for the agentic web. We are applying to ICANN for the [.agent] Top-Level Domain, supported by 29,000+ members and 7,000+ companies. With DMV, builders can pre-register an [.agent] name for…

    #11 on June 26, 20261 maker
25. 25

    25. Solarch

    106 upvotes

    Interactive diagrams with AI, and your code always in sync

    Solarch is a diagram-to-code platform powered by a strict rules engine. It instantly transforms visual nodes into deterministic boilerplate code like DTOs and Services. We build the repetitive 80% of the architecture so you can code the…

    #18 on June 9, 20261 maker

Junior imports every day's Product Hunt leaderboard. Each launch is filed under the first topic its makers chose, so it appears in one category only. This list takes the Developer Tools launches dated in June 2026 and ranks them by their upvotes. It refreshes daily.

• Best Productivity Tools252
• Best Design Tools77
• Best Open Source Tools74
• Best Mac Apps52
• Best Android Apps48
• Best Marketing Tools40
• Best AI Tools30
• Best SaaS Tools36
• Best iOS Apps47
• Best APIs43
• Best Chrome Extensions38
• Best Analytics Tools17
• Best Health & Fitness Apps30
• Best Social Media Tools21
• Best Sales Tools17
• Best Fintech Tools26

• All Developer Tools585
• Every launch in June 2026
• All best-of lists

What was the top Developer Tools launch of June 2026?

Spotlight by Backplanes ("Session reports for Claude Code & Codex to improve your code"), with 393 upvotes on June 10, 2026, where it finished #3 of the day.

How many Developer Tools launched in June 2026?

63 on Product Hunt, with 6,738 upvotes between them. This list shows the 25 most upvoted.

How is this list ranked?

By Product Hunt upvotes, as recorded on launch day. Ties go to the launch with the better daily rank. Every launch is counted once, in the category its makers listed first.

How do I reach the makers of these Developer Tools?

Each launch links to its page on Junior, with the people behind it (24 makers across this list). Junior adds their verified work emails, LinkedIn and X profiles for subscribers.