
Free Piano Tool - 88-Key Online Piano with A440 & Metronome
Play a free 88-key online piano with A440 concert pitch, key labels, and a built-in metronome. Mobile-friendly, no download required.
@StepintoBEra · X
Mine is free, btw.
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Play a free 88-key online piano with A440 concert pitch, key labels, and a built-in metronome. Mobile-friendly, no download required.
@StepintoBEra · X
Mine is free, btw.

Quorank 帮助发现竞争对手的排名漏洞和易上排名的长尾词。
@quorankSERP · X

Wager digital assets in fast, skill-based typing matches. Real-time competition and onchain rewards turn every keystroke into a spectator-ready earning experience.
@weston_union · X

通过结构化课程和练习提升打字速度。
u/Clarry_j · Reddit
Got tired of being so damn slow at writing, built an app to fix it I built this over a summer, which is a sentence I used to write about other things. I'm a physics student and a sailing instructor, I don't code, and I used an AI so I wouldn't have to learn — which, God help me, is the most honest thing I've said in this whole post. 31 sub-levels. It tracks the letters I get wrong and the specific pairs of letters I get wrong, which is more self-awareness than I've managed in a decade. Free

Blue White Flag - 节奏判断游戏,按箭头键跟随节拍并区分真假指令。
Blue White Flag — Play Blue Flag White Flag Games Online Free

选择调式、风格和情绪,即时生成和弦进行并预听音频。

Keyverse 是免费浏览器游戏系列,通过关卡教你 Mac 快捷键,无需下载。
@EjCruz77 · X
Just launched Keyverse — a free browser game that teaches you Mac keyboard shortcuts by playing, not memorizing. No install. No signup. Just open and train. #buildinpublic #indiedev #macOS


玩键盘拼图游戏赚取分数。
@pyoner · X
I scored 41 points in the Keyboard Puzzle Game, built with ChatGPT by @pyoner! Can you beat my score? 🤔🎮 #keyboardpuzzlegame #chatgpt #ai #games

SecretSweep finds leaked API keys, passwords, and credentials across your GitHub, GitLab, and Bitbucket repositories.
@MaksimHaydwv7j · X

在一个地方捕捉会议、用AI写笔记、在共享画布上创建图表。
@rubs_murga · X

为代码智能体工作流管理 API 密钥和使用预算。
u/Zyron_X · Reddit
I built a service for people to use Codex API without 5-hour limit disruption I built a small service for people who use the OpenAI Codex API regularly and want more predictable usage without the 5-hour or weekly limits. It currently provides: Frontier OpenAI models (GPT 5.6 family included) Managed API key Monthly usage budgets depending to plan No 5-hour limit No weekly limit Under the hood, it is built on top of an open-source project and proxies requests to