1
Chatbox
chatboxai.appAlso covers ai chat · same kind of online tool
Chatbox brings several AI models into one app for chat and work using user supplied API keys.
Alternatives
The Best ChatPDF Alternatives in 2026
24 alternatives2 free · 7 open source
Looking for something like ChatPDF? Here are 24 alternatives, ranked by how closely they match it on purpose, features and platforms. Of these, 2 are free or have a free plan and 7 are open source.
ChatPDF brings ChatGPT-style intelligence and PDF AI technology together for smarter document understanding. Summarize, chat, and analyze.
Top picks at a glance
First suggestionChatboxChatbox brings several AI models into one app for chat and…Free or freemium optionWoozlitWoozlit offers free AI chat and image generation tools…Open source optionOdysseusOdysseus provides a self hosted AI workspace with chat…Another optionMerlinMerlin offers an AI chat interface for accessing models…
Quick comparison
| # | Alternative | Pricing | Open source | Platforms |
|---|---|---|---|---|
| 1 | Chatbox | — | Not stated | Android, iOS, Web |
| 2 | Merlin | — | Not stated | Android, Browser extension, iOS |
| 3 | Mendable | — | Not stated | Web |
| 4 | ChatHelp.ai | — | Not stated | Web |
| 5 | PyGPT | — | Not stated | Linux, macOS, Web |
| 6 | Urv AI Chat | — | Not stated | Web |
| 7 | Woozlit | Free | Not stated | Web |
| 8 | Featured GPTs | — | Not stated | Browser extension, Web |
| 9 | Microsoft Copilot | — | Not stated | Web |
| 10 | 4thWall AI | — | Not stated | Web |
All ChatPDF alternatives
2
Merlin
getmerlin.inAlso covers ai chat · same kind of online tool
Merlin offers an AI chat interface for accessing models such as ChatGPT and Gemini to research, write, code, and create images.
3
Mendable
mendable.aiAlso covers ai chat · same kind of online tool
Mendable helps developers build AI chat applications by ingesting technical content and deploying answers with a line of code.
4
ChatHelp.ai
chathelp.aiAlso covers ai chat · same kind of online tool
ChatHelp.ai offers a business, work, and study assistant, a website chat widget, and curated AI tools and agents.
5
PyGPT
pygpt.netAlso covers ai chat · same kind of online tool
PyGPT provides an open-source desktop AI assistant for chat, agent building, and retrieval-augmented knowledge access.
6
Urv AI Chat
perchance.org/urv-ai-chatAlso covers ai chat · same kind of online tool
URV AI offers chat with language models, character creation, and image generation.
7
Also covers ai chat · same kind of online tool · free
Woozlit offers free AI chat and image generation tools through its online service.
8
Featured GPTs
featuredgpts.comAlso covers researchers · same kind of online tool
Featured GPTs curates a directory of custom GPTs available in the ChatGPT store.
9
Also covers ai chat
Microsoft Copilot provides AI chat for answering questions, writing, image creation, work tasks, and coding.
10
4thWall AI
beta.4wall.aiAlso covers ai chat
4thWall AI provides an interactive chat platform for conversations with AI characters.
11
Also covers ai chat · open source · free
Odysseus provides a self hosted AI workspace with chat, agents, tools, model serving, email, and research.
12
ChatSonic
writesonic.com/chatAlso covers ai chat
ChatSonic combines AI chat with marketing workflows, research, and connected tools.
13
Thena
thena.aiAlso covers ai chat
Thena provides customer-support ticketing and AI chat for B2B teams across Slack, email, and web chat.
14
Also covers ai chat · open source
NextChat is an AI chat assistant client that supports named language models and is available on web and several desktop and mobile platforms.
15
Also covers ai chat · open source
chatbot-ui provides an AI chat interface for working with different models.
16
Onyx
github.com/onyx-dot-app/onyxAlso covers ai chat
Onyx provides open-source AI chat that can work with different language models.
17
Also covers ai chat · open source
Enclave explores a virtual world for AI companionship and social interaction.
18
Also covers ai chat · open source
SillyTavern is a frontend for users working with large language models.
19
Also covers ai chat · open source
GPT4All runs language models locally on a range of devices through open-source software.
20
Ezra-AI
ezra-ai.comAlso covers technology
Ezra provides voice and digital AI call center services for restaurants, food delivery businesses, and online ordering firms.
21
Same kind of online tool · open source
LibreChat brings AI conversations together in a unified, customizable interface.
22
Userdesk
userdesk.ioSame kind of online tool
Userdesk builds ChatGPT-style support chatbots trained on company data to answer questions and collect website leads.
23
Visus
visus.aiVisus lets users create a ChatGPT-style assistant trained on their own documents and knowledge base.
24
ChatGPT
chatgpt.comSame kind of online tool
ChatGPT supports questions, writing, image creation, work tasks, and coding through chat.
No alternatives match this filter.
Alternatives to similar tools
Microsoft Copilot24 alternativesSource code24 alternativesChatGPT-Next-Web24 alternativesChatbox24 alternativesOdysseus24 alternativesThena24 alternatives
What is the best alternative to ChatPDF?
Based on features, tags and platforms, the closest alternatives to ChatPDF are Chatbox, Merlin, and Mendable.
Is there a free alternative to ChatPDF?
Yes. Woozlit and Odysseus are free or offer a free plan.
Are there open-source alternatives to ChatPDF?
Yes: Odysseus, ChatGPT-Next-Web, Source code, and Enclave.
Alternatives are suggested from the purpose and features described in our listings. Different pages for the same product appear once. Read each description to check whether it fits your task. How we choose alternatives · Suggest an alternative