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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.

Elai.io

general

AI video generator for training and tutorials

Free 49 · 54,328 votes

Riffusion

general

Generative AI for creating and remixing music

Free 48 · 28,816 votes

TeeAI

general

Generate custom T-shirt designs from text or images

Free 38 · 59,743 votes

Esyblog

general

Spreadsheet to published SEO articles

Free 38 · 56,679 votes

neoSVG

general

Convert text and images to SVG

Free 37 · 44,996 votes

Luma AI Video Generator Free Online

general

Create videos from text prompts

Free 37 · 44,474 votes

Bookwiz

general

Writing assistant for authors and novelists

Free 37 · 40,251 votes

Fine Pixel

general

Upscale photos and create images from descriptions

Free 37 · 39,135 votes

AI Humanize

general

Rewrite AI content to read like human writing

Free 37 · 38,078 votes

Humanize AI Text

general

Converts AI text to match human writing style

Free 37 · 36,724 votes

TTSVox

general

Text-to-speech with natural-sounding voices

Free 37 · 35,972 votes

Model Fusion

general

Open-source framework for building AI applications

Free 37 · 35,524 votes

Flickify

general

Convert articles and text to video

Free 35 · 17,686 votes

Image to Text Converter

general

Extract text from images and scanned docs

Free 35 · 41,923 votes

Translate Images with OCR while Preserving Text Formats to 130+ Languages

general

Translate images to 130+ languages while preserving formatting

Free 35 · 16,080 votes

Wordhero

general

Write high-quality blog posts and content fast

Free 35 · 12,805 votes

GACOR25

general

Online gaming platform

Free 35 · 13,140 votes

CassetteAI

general

Music, sound effects, and speech generation on edge hardware

Free 34 · 7,148 votes

Stealthly

general

Rewrite AI text to pass human detection

Free 32 · 57,781 votes

Generador de Textos Inteligencia Artificial. Pruébalo Gratis

general

AI text generation in Spanish

Free 32 · 57,327 votes

AI Sentence Rewriter

general

Rewrite text for grammar and clarity

Free 32 · 54,040 votes

FluxPro AI

general

Image generation with Flux.1 models and LoRA support

Free 31 · 43,540 votes

Voice Out

general

Read Google Docs, PDFs, and webpages aloud

Free 31 · 39,286 votes

Privee AI

general

Chat with custom AI characters and roleplay scenarios

Free 31 · 37,855 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.