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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.

True Paid

Vast.ai

general

Rent GPUs for AI, machine learning, and rendering

From $5 47 · 15,087 votes

AltText.ai

general

AI alt text generator for images

Paid 43 · 53,696 votes

Luvvoice

general

Voice generation and cloning from text

Paid 42 · 16,420 votes

Supermeme.ai

general

Turn text into memes with AI

Paid 40 · 60,677 votes

Twelve Labs

general

Search and analyze video with AI

Paid 39 · 16,549 votes

HumanizerPro

general

Make AI-generated text sound natural and human-like

Paid 38 · 60,024 votes

GetBotz

general

Publish 50+ SEO-optimized articles monthly with full automation

Paid 38 · 59,575 votes

AIHumanizer.ai

general

Transform AI-generated content to read more naturally

Paid 38 · 59,630 votes

Dream Page

general

Build a blog or website in minutes

Paid 38 · 57,496 votes

ReadPartner

general

News monitoring and trend analytics for business teams

Paid 38 · 57,230 votes

Audionotes

general

Voice and audio to structured notes

Paid 38 · 56,461 votes

GetQuiz

general

Generate quizzes from text, video, or audio content

Paid 37 · 42,472 votes

Cliptics

general

Free AI image and audio tools without signup

Paid 37 · 41,650 votes

Immersive Fox

general

Convert PDFs into interactive courses with adaptive quizzes

Paid 37 · 38,103 votes

Context Clue

general

Organize and search technical documentation across teams

Paid 37 · 36,108 votes

AppSumo

general

Software deals for entrepreneurs

Paid 37 · 43,734 votes

BEXI.ai

general

Makes AI-generated text read like human writing

Paid 37 · 33,481 votes

Humanize.im：Humanize AI Text Free Online

general

Make AI-generated text read naturally

Paid 36 · 25,450 votes

Undetectable AI

general

Text humanization for AI-generated content

Paid 36 · 30,396 votes

Rizzle

general

Turn articles into professionally edited video

Paid 36 · 28,780 votes

Exporeader

general

Convert YouTube videos to blog posts

Paid 36 · 25,056 votes

Wordfixerbot

general

Rephrase text quickly and clearly

Paid 36 · 19,303 votes

Podcast Show Notes Generator

general

Auto-generate podcast summaries

Paid 35 · 18,168 votes

CopyGenius

general

Write product descriptions, ad copy, and blog outlines

Paid 35 · 13,787 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.