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Insights, tutorials, and tools for developers.

Kimi K3.1 Pro VRAM Requirements

Kimi K3.1 Pro needs 1.56 TB for its MXFP4 weights before any cache. Which GPU nodes fit it, what a 512 GB Mac can run, and what 256K of context adds.

DevToolLab Team·November 8, 2026

Latest Articles

Guide

4 min

Safe Software Downloads for Developers

How malicious installers and typosquatted packages reach developer machines, and the verification habits that keep them off your workstation.

DevToolLab Team·November 7, 2026

Tutorial

7 min

How to Flush DNS on Mac, Windows, Linux

Run ipconfig /flushdns on Windows, dscacheutil and killall -HUP mDNSResponder on macOS, resolvectl flush-caches on Linux, and learn which cache you can't clear.

DevToolLab Team·November 6, 2026

Tutorial

9 min

OpenSSH 10.6p2: Check and Patch Alpine

OpenSSH 10.6p2 fixes a password login bypass on Linux systems without PAM, Alpine included. Check your host, set PasswordAuthentication no, then upgrade.

DevToolLab Team·November 5, 2026

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Tutorial

8 min read

How to Check SSL Certificate Expiration

Pipe openssl s_client into openssl x509 -enddate to see when a server's SSL certificate expires. Plus -checkend for cron, curl, Python, Node and PFX files.

DevToolLab Team·October 5, 2026

Best SQL Clients in 2026: 8 Tools Compared

Guide

10 min read

Best SQL Clients in 2026: 8 Tools Compared

DBeaver, DataGrip, Beekeeper Studio, TablePlus, DbGate, DbVisualizer, Chat2DB and VS Code's MSSQL extension, priced for a five-developer team.

DevToolLab Team·October 4, 2026

Tutorial

8 min read

How to Open Large CSV Files (1M+ Rows)

Excel stops at 1,048,576 rows. Open a bigger CSV with DuckDB, pandas chunks, Polars or a browser viewer, or split it into Excel-sized files.

DevToolLab Team·October 3, 2026

What Is an Agent Harness? Pi 1.0 Explained

Guide

9 min read

What Is an Agent Harness? Pi 1.0 Explained

An agent harness is the loop, tools, permissions and context around a model. Watch Pi 1.0 run one, then compare Claude Code, Codex, OpenCode and DeepSeek.

DevToolLab Team·October 3, 2026

Best AI Penetration Testing Tools in 2026

Guide

10 min read

Best AI Penetration Testing Tools in 2026

Aikido, XBOW, NodeZero, RunSybil, Strix, Shannon and PentAGI compared on published prices, licenses and the one third-party head-to-head test of 2026.

DevToolLab Team·October 2, 2026

Guide

8 min read

Git SHA-256: What Changes in Git 3.0

Git 3.0 makes SHA-256 the default for new repos, with no release date yet. Check your repo's hash, create a SHA-256 repo, and see what breaks on GitHub.

DevToolLab Team·October 2, 2026

Kafka Alternatives in 2026: Costs Compared

Guide

10 min read

Kafka Alternatives in 2026: Costs Compared

Cloudflare K2, Redpanda, WarpStream, AutoMQ, Amazon MSK, Pulsar and NATS compared on one 5 MB/s workload using each vendor's published rates.

DevToolLab Team·October 2, 2026

Tutorial

7 min read

How to Generate an SSH Key for GitHub

Run ssh-keygen -t ed25519, load the key into ssh-agent, paste the .pub file into GitHub, then test with ssh -T. Commands for Mac, Windows and Linux.

DevToolLab Team·October 1, 2026

Tutorial

8 min read

How to Track AI Referral Traffic in GA4

GA4 now puts ChatGPT, Claude and Perplexity visits in an AI Assistant channel, but it missed 5.5% of our AI sessions. The custom channel and regex that fix it.

DevToolLab Team·October 1, 2026