This selection moves from database lessons and music tools to internal hosting and a daily prediction game. Each project was submitted to Show HN in the 24 hours from October 20, 2026 at 02:00 UTC to October 21 at 02:00 UTC (October 19 at 7 p.m. to October 20 at 7 p.m. Pacific).
We checked the latest Show HN list, official API records and linked websites, then excluded recently collected domains. Ten eligible sites fit this window, so no extension was needed. Submission time does not establish a website’s first launch date. These are editorial introductions based on public information, not completed product trials.
1. Ida: Prepare Mac actions with your voice
Ida is a native Mac assistant controlled by holding a shortcut and speaking. Its public examples cover finding calendar information, drafting messages and preparing changes across connected applications. The maker describes a review step before consequential actions, which gives users a place to inspect what a spoken request became.
Before you try it: The maker specifies macOS 14 or later and offers local or cloud transcription. Connected applications still require appropriate access. We did not install Ida, connect an account or test an action.
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2. SchemaWright: Practice database design against concrete requirements
SchemaWright presents business scenarios that must be answered with SQL table definitions. Hidden tests assess behavior in PostgreSQL, including constraints and cases such as reusing an email after a soft deletion. Developers learning schema design can compare several valid approaches rather than simply matching a prescribed diagram.
Before you try it: Two exercises are available without an account; other access varies by plan. Passing an exercise checks its stated conditions, not every production concern. We reviewed the examples without completing the course.
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3. eze: Publish small internal tools from a folder
eze is self-hosted software for turning HTML, CSS and JavaScript into an internal website. Its SDK provides data storage, live updates, uploads and identity tied to company sign-in. Teams with small dashboards or shared utilities can inspect a simpler deployment path than building separate authentication and backend plumbing for each tool.
Before you try it: Setup requires a server, wildcard DNS, HTTPS and company authentication. Every signed-in member can open, change and redeploy every site, so this is unsuitable for separating access between untrusted groups. We did not deploy it.
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4. MultiTrack: Sketch a song on a Mac
MultiTrack offers a composition canvas where a songwriter chooses a musical key, adds instruments and sings written lyrics over the arrangement. Its website describes using instruments installed with Logic or GarageBand and continuing edits in Logic Pro. The 1.3 update adds searchable instrument selection and favorites alongside changes to note playback.
Before you try it: The maker distinguishes the website release from the Mac App Store version. Check the available version and instrument setup before buying. We did not install the app, record audio or evaluate the playback fixes.
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5. Lox Compiler Visualizer: Follow source code through an interpreter
The Lox Compiler Visualizer links source tokens, syntax-tree nodes and bytecode instructions in an interactive display. After a run, visitors can step through execution and inspect a reconstructed evaluation stack. Readers of Crafting Interpreters can use the views to connect the book’s stages with a small program’s behavior.
Before you try it: The tool focuses on Lox and the clox virtual machine compiled to WebAssembly. It is an educational view of that implementation, not a general debugger for other languages. We reviewed its controls without validating every execution trace.
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6. Strategy Studio: Explore public records with source links
Strategy Studio makes public organizational data searchable by names, institutions or plain-language questions. Its interface links results to filings and offers views of school records, compensation and other reported data. Reporters and researchers can use those connections to identify records worth reading in their original form.
Before you try it: Check tax years, coverage windows and the underlying filings before drawing conclusions. Similar names and aggregated figures require context. We reviewed the public interface without auditing the dataset or investigating an individual.
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7. MCP Census: Check public evidence about an MCP server
MCP Census combines server lookups with an ongoing change feed covering events such as repository changes, endpoint availability and tool-list changes. Developers can inspect evidence and freshness before considering a server, or follow changes through its API. The site distinguishes assessed problems from entries where evidence is still incomplete.
Before you try it: The service explicitly says it is not a malware scanner or the official MCP registry. A passing result is not a security guarantee, and lookup quotas apply. We did not install a server or submit a configuration.
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8. Piola: Set labelled timers from the Mac menu bar
Piola provides three timer-entry styles: pulling from the menu bar, turning a dial or typing a duration and label. Several timers can run together with individual finish times, pre-alerts and snooze options. Mac users juggling short tasks can inspect the controls and choose an input style that fits their routine.
Before you try it: It requires macOS 26 or later. Notifications are managed by macOS, and finished timers remain in local history for only a day. We inspected the website without installing the app or testing alerts.
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9. Classic Ads: Make sponsored search results more visible
Classic Ads restyles Google search advertisements with backgrounds and labels inspired by older designs. The Chrome extension offers nine visual eras, while its website previews them in a playful retro interface. People who need to see ads can inspect a more conspicuous presentation without removing their content or destination links.
Before you try it: This changes appearance rather than blocking ads or checking advertisers. It targets desktop Chrome and depends on the search page’s structure. We viewed the preview but did not install the extension or verify its behavior on live searches.
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10. notbot: Try to surprise a daily prediction game
notbot presents a daily prompt with five chances to supply an answer outside a set of AI predictions. Its public explanation says predictions are locked in before play and rarer valid answers among players earn more points. Puzzle fans can inspect a small experiment in making unexpected associations rather than selecting the most obvious response.
Before you try it: Scoring depends on the game’s validity rules and other players’ answers. This is entertainment, not a measure of creativity or human identity. We reviewed the public instructions without completing a round.
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Choose a useful starting point
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Today’s domain list
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www.heyida.ai schemawright.com eze.page aquariuscomputer.co www.shivfitzpatrick.com strategystudio.org mcpcensus.com piola.ideascollective.com classic-ads.com notbotgame.com
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