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General LLM tools include frameworks, APIs, evaluation utilities, and infrastructure specifically built around large language models. This category covers 369 tools that help developers build, test, fine-tune, and run applications on top of LLMs, from embedding calculators to full model-serving platforms.

WriteHuman AI Humanizer Tool

general

Rewrite AI text to read like human writing

Free 41 · 37,190 votes

The portfolio website builder for photographers, artists and designers

general

Portfolio platform with galleries and zero-commission sales

Free 41 · 18,304 votes

Realistic Text to Speech converter & AI Voice generator

general

Generate realistic voiceovers and download as MP3 or WAV

Free 37 · 4,326 votes

TextBehindImg

general

Free browser tool to place text behind images for social media

Free 32 · 61,991 votes

Frizerly

general

Auto-publishes SEO blog posts weekly

Free 32 · 53,671 votes

Free Instant AI Alt Text Generator

general

Generate SEO-friendly alt text for images automatically

Free 31 · 42,723 votes

KitForStartups

general

SvelteKit and TypeScript starter for SaaS apps

Free 31 · 38,106 votes

AI Detector

general

Check if content was written by AI or humans

Free 31 · 28,764 votes

This is a technically focused category aimed primarily at developers and ML engineers. Tools like Cognee and UpTrain address retrieval-augmented generation (RAG) pipelines and model evaluation, while platforms like Dstack and PeriFlow handle compute infrastructure for training and inference. Embedding Similarity Calculator and similar utilities fill narrow but useful gaps in LLM development workflows. OpenAssistant and Cerebras-GPT represent open-source or open-weight models that developers can run or fine-tune directly. When comparing options, consider whether a tool is model-agnostic or tied to a specific provider, and whether it supports the models you are already using. Latency, throughput, and cost-per-token are the metrics that matter most for production workloads. Evaluation tools are often underinvested in early projects but become critical once you are shipping to users. Many tools here are open source with paid managed versions, while others are closed SaaS products with usage-based pricing.