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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

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Portfolio platform with galleries and zero-commission sales

Free 41 · 18,304 votes

AI Text Generator Free

general

Generate unique text for blogs, marketing, and writing projects

Free 38 · 64,455 votes

LensAI advertising I Efficient monetization web traffic I Context advertising

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AI-powered ad creation with optimization for conversions

Free 38 · 64,304 votes

Orchard

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AI assistant with web search and file integration

Free 38 · 63,113 votes

Superblog

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Fast, SEO-ready blogging platform with zero maintenance

Free 38 · 59,382 votes

Essay Writer App

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Write essays and homework with AI assistance

Free 37 · 54,885 votes

MemoriPy

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Learn faster with spaced repetition and active recall

Free 37 · 46,407 votes

8arms.ai

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AI marketing content and campaign management

Free 37 · 44,649 votes

Realistic Text to Speech converter & AI Voice generator

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Generate realistic voiceovers and download as MP3 or WAV

Free 37 · 4,326 votes

Powered by GPT4o

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Convert text and ideas into slides instantly

Free 37 · 44,142 votes

Story Path

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Generate story branches and plot ideas

Free 37 · 34,888 votes

Write My PRD

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Generate product requirement documents instantly

Free 36 · 31,557 votes

Textbuddy

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AI writing tools for clear, human-like content

Free 36 · 30,790 votes

Botowski

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AI content generation for businesses

Free 36 · 29,726 votes

Lanta AI

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Video to anime-style animation

Free 36 · 26,211 votes

The Best Handwriting OCR with latex equations

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Handwriting and math OCR

Free 36 · 25,904 votes

Satellitor

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Automatically write and publish SEO blog posts

Free 36 · 23,253 votes

AudioX

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Generate audio, sound effects, and music with AI

Free 36 · 21,842 votes

Articly.ai

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Generate SEO blog posts automatically

Free 36 · 20,471 votes

MagicBlog

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Auto-generate and publish SEO blog content daily

Free 35 · 13,227 votes

Voice Vector

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Voice cloning and text-to-speech on a pay-as-you-go model

Free 34 · 11,075 votes

AudioScribe.io

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Convert audio and video to text

Free 32 · 64,961 votes

TextBehindImg

general

Free browser tool to place text behind images for social media

Free 32 · 61,991 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.