Show HN: I built a Cold DM tool (450 DMs/day)

Hey, I'm Johann

I grew a lot of my past products with cold DMs on twitter, but would do them manually.

So, I made a tool to automate cold DMs on X(Twitter) and send 450+ cold DMs daily.

Top Rest API Design Pitfalls by Victor Rentea at Spring I/O 2025 [video] (youtube.com)

Why ML Needs a New Programming Language – Chris Lattner – Signals and Threads (signalsandthreads.com)

Trends I have noticed over text (endlessfootnote.substack.com)

Wormhole – Simple, private file sharing (wormhole.app)

Exe: Distribute Standalone SvelteKit Web Apps (jesterkit.com)

Polars GPU Execution. (70% speed up) – by Daniel Beach (dataengineeringcentral.substack.com)

Samantha Smith (en.wikipedia.org)

SvelteKit Remote Functions, by Simon Holthausen [video] (youtube.com)

Pg_guard: Database Proxy for Programming Agents (blog.jonaylor.com)

IBM and AMD to Develop Quantum-Centric Supercomputing (eetimes.com)

Andreessen-Backed Fintech Lead Bank Hits $1.47B Valuation (bloomberg.com)

The 2025 Fall Foliage Prediction Map (smokymountains.com)

Digital Extremes violate the cURL license (github.com)

Probe launched after plot to play 'sex noises' behind Starmer at PMQs uncovered (news.sky.com)

Show HN: A small browser game (PC only) built with Phaser 3 (cubic-zombies.pages.dev)

Venice Pickpockets File Lawsuits Against Citizen Patrols (wantedinmilan.com)

McDonald's CEO Says American Brands' Reputations Have 'Dimmed' (bloomberg.com)

A single dose of LSD seems to reduce anxiety (newscientist.com)

The Internet from Your Terminal: 8 Ways to Use Curl (howtogeek.com)

Sortition (en.wikipedia.org)

Dry-Mechanical Scrap Recycling of Dry-Processed Lithium Ion Battery Cathodes (advanced.onlinelibrary.wiley.com)

Holiday Outlook 2025 (pwc.com)

How microdosing GLP-1 drugs became a longevity 'craze' (washingtonpost.com)

Show HN: Dancing Links (DLX) algorithm to solve Exact Cover problems (github.com)

The Virgil Abloh Archive (gq.com)

Over 50% of the job cuts in video games are in California (thegamebusiness.com)

Designing Back Ends for Feature Flag Support from Day One (substack.com)

[how]To Manipulate HTTP with CURL[2017] (linuxconfig.org)

Ghostty Now Provides an Agents.md (twitter.com)

Non-Obviously Great Startups (postround.substack.com)

The Blind Date of Mars with 3I/Atlas in a Month (avi-loeb.medium.com)

Germany and France want to make Arte a continental television channel (brusselstimes.com)

Petcoach.ai- Pet health, nutrition and allergy tracker (petcoach.ai)

Show HN: Per row context understanding for data transformations (github.com)

Sky-high budget gap: FAA launches air traffic overhaul, lacks cash to finish it (theregister.com)

Amazon RTO policy is costing it top tech talent, according to internal document (businessinsider.com)

Has AI caused emotional harm to you or someone you care about? (thehumanlineproject.org)

Handle Feedback Productively (dontbreakprod.com)

Activity Monitor anatomy: memory accounting on Mac OS (bazhenov.me)

LLMs from Scratch Using Middle School Math – TDS Archive (medium.com)

Attempt at Formal Yang–Mills Mass Gap Proof (Feedback Welcome) (zenodo.org)

TheFWA still coolest website in the web (thefwa.com)

ICPC 2025 World Finals Results (worldfinals.icpc.global)

Japan Is Still Investing in Custom Floating Point Accelerators (nextplatform.com)

Template Language (hmpl-lang.dev)

Episode 6 of building a real React/Ruby on Rails app from scratch (youtube.com)

You can now branch conversations in ChatGPT (twitter.com)

AI Observers Hit the High Seas (biographic.com)

if you meet the singaporean on the road (substack.com)

The race to build a distributed GPU runtime (voltrondata.com)

Show HN: I built a Cold DM tool (450 DMs/day)

Comments (0)