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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 Desktop

Vast.ai

general

Rent GPUs for AI, machine learning, and rendering

From $5 47 · 15,087 votes

Magiclight.AI

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Turn text prompts into AI-generated videos

Free 46 · 27,602 votes

Luvvoice

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Voice generation and cloning from text

Paid 42 · 16,420 votes

Tolgee

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App translation with full context and human review

Free 41 · 39,787 votes

HumanizeAI.io

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Convert AI text to natural, human-like writing

Free 41 · 12,898 votes

Formula Bot

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Generate Excel formulas and analyze spreadsheets without coding

Free 40 · 16,504 votes

Tiptap

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Open-source rich text editor framework with extensions

Free 40 · 18,071 votes

HumanizerPro

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Make AI-generated text sound natural and human-like

Paid 38 · 60,024 votes

GetBotz

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Publish 50+ SEO-optimized articles monthly with full automation

Paid 38 · 59,575 votes

HumanizeAI Tools

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Make AI text read more naturally

Free 37 · 51,528 votes

Podcraftr

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Automate podcast editing and social clips

Free 37 · 51,174 votes

EssayFlow

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AI essay writing tool for students and professionals

Free 37 · 50,963 votes

VoiceDub

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AI voice covers for songs with 10,000+ voices

Free 37 · 42,524 votes

An AI employee that works 24/7 for your business

general

SMS automation for local businesses

Free 36 · 16,224 votes

Talespinner

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Generate story outlines and full narratives from prompts

Free 36 · 21,443 votes

Undetectable Humanizer to Bypass AI Detectors

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Rewrite AI text to read human-written

Free 36 · 20,445 votes

Wordfixerbot

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Rephrase text quickly and clearly

Paid 36 · 19,303 votes

Podcast Show Notes Generator

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Auto-generate podcast summaries

Paid 35 · 18,168 votes

Vidboard AI

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AI video maker and editor

Free 35 · 16,776 votes

Kwirk

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AI-powered writing and productivity tools

Free 35 · 14,597 votes

HandtextAI

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Convert typed text to realistic handwritten notes

Paid 34 · 4,482 votes

Vocalize

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Create AI voice covers and text-to-speech audio

Free 34 · 30,745 votes

WriterTools

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Platform for publishing technical expertise to a global audience

Paid 32 · 61,512 votes

Create N Play

general

Create AI-generated text adventure games for Discord

Free 32 · 60,108 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.