Is there a free alternative to Copilot for contracts?

Yes. There are free, browser-based tools that let you read, map, mark up, and share a contract without a Microsoft 365 licence or a Copilot subscription. They differ in emphasis: most free tools focus on structure and collaboration (clause maps, notes, sharing) rather than AI drafting. If your need is understanding and negotiating a contract with people outside your organisation, a free tool often fits better; if your need is AI drafting inside Word, Copilot may still be the better choice.

Do I need Microsoft 365 to review a contract?

No. Reviewing a contract only requires being able to read it, mark it up, and share your thoughts. A browser-based tool does all of that with no Microsoft 365 licence. Microsoft 365 and Copilot are one convenient way to work with contracts if you already pay for them, but they are not a requirement for reviewing an agreement.

Can I share a marked-up contract with someone who doesn't have Copilot?

You can share the document, but not the Copilot experience. If you mark up a contract using Copilot inside Word and send it out, the other party sees a normal file and your tracked changes, not the AI-assisted reasoning or the ability to continue that same way. This is the core limitation for cross-organisation work. A shared browser-based tool avoids it by putting both sides on the same surface, so the other party opens the same clause map and notes you do, with nothing to install.

How much does Copilot for contracts cost?

We deliberately do not quote a figure, because Microsoft's pricing and packaging change and vary by region and plan. The stable point is the structure: Copilot for the Office apps is a paid add-on that generally requires a qualifying paid Microsoft 365 licence underneath it. That two-layer cost is the reason many individuals and small teams look for a free alternative. Check Microsoft's official pricing for current, accurate numbers.

Is a free contract tool safe for confidential documents?

It depends entirely on the tool, not on whether it is free. Free is not automatically less safe, and paid is not automatically more safe. What matters is whether the document is sent to a server or processed locally in your browser, whether it is stored, and whether your content is used to train a model. Read the terms of any tool, free or paid, before uploading a sensitive agreement, and for regulated documents follow your organisation's policy.

What does Copilot do better than a free review tool?

Copilot is strong at AI drafting and rewriting inside Word, at summarising long documents and email threads, and at acting directly on the file you already have open without exporting anything. For a team already standardised on Microsoft 365, that in-place convenience and familiar governance are real advantages. A free structural tool does not generate draft language for you; it helps you read, connect, and share a contract instead.

Can two parties collaborate on a contract if only one has Copilot?

Only in a limited way. The party with Copilot gets AI help on their side, but the other party works with a plain document. Genuine shared collaboration, where both sides see the same reasoning and notes, needs a common surface. That is either both parties holding the same licensed tooling, or both using a free tool that opens in any browser. The second option is usually easier to arrange because it asks nothing of the other side.

Do I have to install anything to review a contract in the browser?

With a browser-based tool, no. You open a link, and the document and your working notes are there. That is much of the point: nothing to install and often no login means the counterparty, supplier, or client on the other side can join the same review immediately, whatever software they happen to use.

Weave vs Copilot

A free alternative to Microsoft Copilot for reviewing contracts

Microsoft Copilot is a capable assistant, and if your organisation already runs on Microsoft 365 it can genuinely speed up the way you draft and summarise contracts. But most people searching for a free alternative to Copilot for contracts are not questioning whether Copilot is good. They are running into a more practical wall: Copilot is a paid add-on that lives inside a Microsoft licence, and contract review almost never stays inside one organisation. The moment you send a marked-up agreement to a counterparty, a supplier, or a client, the tool that helped you stops helping both of you.

This page is meant to be useful whether or not you ever try our product. We describe what Copilot does well, where its licensing model becomes a barrier, what to weigh before sending any confidential document to any tool, and what a free, browser-based review tool can and cannot do. The goal is an honest comparison you could hand to a colleague, not a sales pitch. Where we are unsure of a specific Microsoft detail, we say so rather than invent it.

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What Microsoft Copilot actually is

Microsoft Copilot is an AI assistant that Microsoft has woven into its products, including the Microsoft 365 apps most contracts already live in: Word, Excel, Outlook, and Teams. For contract work, the relevant version is the one that sits inside those Office apps, where it can read the document you have open, answer questions about it, draft language, and summarise long text without you leaving Word.

It is important to be precise about the commercial model, because that is where the alternative question comes from. Copilot for the Microsoft 365 apps is an add-on: it generally requires a qualifying paid Microsoft 365 licence, and then a further paid subscription on top for the Copilot capability itself. We are deliberately not quoting a dollar figure here, because Microsoft's pricing and packaging change and vary by region, plan, and whether you are an individual or an enterprise. What is stable and worth planning around is the shape of it: Copilot is not a free, standalone, open-in-a-browser tool. It is a paid layer on a paid platform, and its usefulness is strongest for people already inside that platform.

Where Copilot is genuinely strong

Give Copilot fair credit. For a team that is already all-in on Microsoft 365, it removes friction from the parts of contract work that happen inside your own four walls.

Drafting help: turning a plain-language instruction into a first-pass clause, or rewriting a paragraph to be shorter or firmer, without leaving Word.
Summarising: compressing a long agreement or a dense email thread so you can brief a colleague quickly.
Working where your documents already are: no export, no new login, no separate app; it acts on the file you already have open.
Familiar governance: for regulated teams, keeping the assistant inside the Microsoft tenant they have already reviewed for security and compliance can be a real advantage.

The real limitation: value trapped inside your licence

Here is the argument that matters most, and it has nothing to do with whether Copilot is clever. Contract review and negotiation are, by nature, cross-organisation activities. A contract has at least two sides. The whole point of a redline is that it travels: you mark it up, send it out, and the other party marks it back. Any tool whose value depends on both sides holding the same paid licence will, at the handoff, stop working for one of them.

Copilot's help lives inside your Microsoft licence and, in practice, inside your tenant. Your counterparty may be a founder using a free email account, a small supplier on a different software stack, a client who has never bought Microsoft 365, or a lawyer at a firm with its own tooling. They open your document and get a plain file. The clause reasoning, the questions you asked, the notes Copilot helped you form: none of that is something they can pick up and continue in the same way. The intelligence stayed on your side of the table.

Concrete scenarios where the wall appears

This is not hypothetical. It is the ordinary texture of getting a deal done.

You are a startup founder reviewing a SaaS vendor's order form. You want to reason through the auto-renewal and liability cap and share your concerns with your co-founder, who is not on your Microsoft plan. The reasoning cannot travel with the document.
You are a small agency sending a marked-up statement of work to a client. The client's procurement team opens it in a free viewer, sees your tracked changes but none of your rationale, and emails back asking what you meant, restarting the loop.
You are a freelancer with a one-off NDA. Buying and configuring a Microsoft 365 plan plus a Copilot add-on for a single two-page document is wildly out of proportion to the task.
You are negotiating with a counterparty abroad who uses Google Workspace. Even a perfect internal Copilot workflow ends the moment the file leaves your organisation, because they simply cannot open it the same way.

Why a browser-based tool removes the wall

A tool that anyone can open in a browser, with no licence and often no login, changes the geometry. Instead of the intelligence living inside one party's subscription, the working surface itself is shared. Both sides read the same clause map, see the same links between related terms, and can leave notes the other can respond to. The document and the thinking around it travel together. That is not a claim that browser tools are smarter than Copilot; it is a claim that a shared, open surface fits the cross-organisation nature of the work better than a licensed one does.

Cost and licensing as a barrier

For a large enterprise that has already standardised on Microsoft 365, the incremental cost of Copilot may be easy to justify. For everyone else, the maths is different, and the barrier is real.

An individual reviewing the occasional agreement, a two-person startup, a small law or accounting practice, or anyone with a genuinely one-off need is being asked to stand up a paid platform subscription and a paid AI add-on to do something that, for them, is intermittent. The recurring cost does not match the intermittent need. This is the single most common reason people go looking for a free alternative in the first place: not dissatisfaction with the AI, but a licence that does not fit their shape or budget.

Recurring subscriptions suit continuous, heavy use; they punish occasional or seasonal use.
Requiring the platform licence before the Copilot licence is a two-layer cost, not one.
For collaboration, the cost effectively multiplies: the model works best when the people you work with also have it, which you cannot control.

Before you send a contract to any tool

This section applies to Copilot, to us, and to every other tool, and it deserves to be said plainly. Contracts are confidential. Deciding where to process one is a real decision, and the honest answer is that you should apply the same scrutiny to any product, free or paid.

Free is not automatically safer, and paid is not automatically safer either. What matters is what the tool does with the document, not its price. Read the terms, and prefer tools that are explicit about it.

Questions worth asking

Is the document sent to a server, or does the tool work locally in your browser? Local processing means the file may never leave your machine.
If it is sent to a server, is it stored, for how long, and who can access it?
Is your content used to train an AI model? For confidential contracts, many teams want a firm no.
For highly sensitive or regulated agreements, does your organisation's policy require the document to stay inside an approved environment? If so, that constraint may point back toward a governed enterprise tool, and that is a legitimate reason to choose one.

What a free, open, browser-based review tool offers

Setting AI aside, a surprising amount of the value in contract review is structural: seeing how a document is organised, connecting related clauses, capturing your own thinking, and sharing all of it with the other side. A good free tool that runs in the browser can do this for anyone, on any side of the table, with no licence.

The building blocks

Clause map: an automatic outline of the agreement so you can jump to indemnity, term, liability, or termination instead of scrolling.
Threaded notes: comments attached to specific clauses that the other party can read and reply to, keeping the negotiation in one place instead of scattered across email.
Clause links: connect a definition to where it is used, or tie a limitation of liability back to the indemnity it modifies, so cross-references stop hiding.
Share with anyone: send a link that opens in a browser, so a counterparty without any special software works from the same surface you do.
Per-person private notes: keep your own candid reactions separate from what you share, so your internal thinking never leaks into the shared thread.
Version history: see how language changed between drafts, and go back if a round of edits went the wrong way.
Export: take the marked-up document and your notes out when you are done, so you are never locked in.

What it does not replace

Be clear-eyed about the trade. A free structural tool is not a substitute for legal advice, and a manual review tool does not generate draft language for you the way an AI assistant does. If your core need is AI drafting inside Word and everyone you work with is already on Microsoft 365, Copilot may serve you better. The free browser approach wins when the priority is reading, understanding, and sharing a contract with people who are not on your platform.

Where Weave fits

Weave is a free, no-login tool to read, mark up, and connect any contract in your browser. It focuses on the structural side described above: a clause map, threaded and private notes, links between related terms, version history, and a shareable link that opens for anyone regardless of what software they own. It is not an AI drafting assistant and does not try to be one; if that is what you need, a tool like Copilot is the honest recommendation. Weave is for the moment you want to understand an agreement and work through it with the other side, without asking either of you to buy a licence first.

When Copilot makes sense

Your whole team, and ideally the people you negotiate with, already run on Microsoft 365, so the shared surface is Microsoft itself.
Your main need is AI drafting and rewriting inside Word, not sharing a review with outside parties.
You review contracts continuously and heavily, so a recurring subscription is easy to justify against constant use.
Your compliance policy requires documents to stay inside a governed Microsoft tenant, and a browser tool would break that rule.
You value having the assistant act on the file you already have open, with no export and no new login.
Summarising long internal documents and email threads is a frequent part of your day.

What to look for in a contract tool

Opens for anyone — because contract review crosses organisations, and a tool the other side cannot open helps only half the table.
Clear on data handling — because you are sending a confidential document, so you should know if it is stored, sent to a server, or used to train a model.
Cost that fits your usage — because a recurring subscription punishes occasional or one-off needs; match the price to how often you actually review.
Shared context, not just tracked changes — because the other party needs your reasoning, not only your edits, to close the loop fast.
Private notes separate from shared ones — because your candid internal reactions should never leak into the counterparty's view.
A clause map or structure view — because jumping to the term that matters beats scrolling a forty-page PDF.
Version history — because you need to see what changed between drafts and recover if a round of edits went wrong.
Export and no lock-in — because you should be able to take your marked-up document and notes out whenever you want.

Questions

Is there a free alternative to Copilot for contracts?: Yes. There are free, browser-based tools that let you read, map, mark up, and share a contract without a Microsoft 365 licence or a Copilot subscription. They differ in emphasis: most free tools focus on structure and collaboration (clause maps, notes, sharing) rather than AI drafting. If your need is understanding and negotiating a contract with people outside your organisation, a free tool often fits better; if your need is AI drafting inside Word, Copilot may still be the better choice.
Do I need Microsoft 365 to review a contract?: No. Reviewing a contract only requires being able to read it, mark it up, and share your thoughts. A browser-based tool does all of that with no Microsoft 365 licence. Microsoft 365 and Copilot are one convenient way to work with contracts if you already pay for them, but they are not a requirement for reviewing an agreement.
Can I share a marked-up contract with someone who doesn't have Copilot?: You can share the document, but not the Copilot experience. If you mark up a contract using Copilot inside Word and send it out, the other party sees a normal file and your tracked changes, not the AI-assisted reasoning or the ability to continue that same way. This is the core limitation for cross-organisation work. A shared browser-based tool avoids it by putting both sides on the same surface, so the other party opens the same clause map and notes you do, with nothing to install.
How much does Copilot for contracts cost?: We deliberately do not quote a figure, because Microsoft's pricing and packaging change and vary by region and plan. The stable point is the structure: Copilot for the Office apps is a paid add-on that generally requires a qualifying paid Microsoft 365 licence underneath it. That two-layer cost is the reason many individuals and small teams look for a free alternative. Check Microsoft's official pricing for current, accurate numbers.
Is a free contract tool safe for confidential documents?: It depends entirely on the tool, not on whether it is free. Free is not automatically less safe, and paid is not automatically more safe. What matters is whether the document is sent to a server or processed locally in your browser, whether it is stored, and whether your content is used to train a model. Read the terms of any tool, free or paid, before uploading a sensitive agreement, and for regulated documents follow your organisation's policy.
What does Copilot do better than a free review tool?: Copilot is strong at AI drafting and rewriting inside Word, at summarising long documents and email threads, and at acting directly on the file you already have open without exporting anything. For a team already standardised on Microsoft 365, that in-place convenience and familiar governance are real advantages. A free structural tool does not generate draft language for you; it helps you read, connect, and share a contract instead.
Can two parties collaborate on a contract if only one has Copilot?: Only in a limited way. The party with Copilot gets AI help on their side, but the other party works with a plain document. Genuine shared collaboration, where both sides see the same reasoning and notes, needs a common surface. That is either both parties holding the same licensed tooling, or both using a free tool that opens in any browser. The second option is usually easier to arrange because it asks nothing of the other side.
Do I have to install anything to review a contract in the browser?: With a browser-based tool, no. You open a link, and the document and your working notes are there. That is much of the point: nothing to install and often no login means the counterparty, supplier, or client on the other side can join the same review immediately, whatever software they happen to use.

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Not legal advice. Weave is an informational tool to help you read and mark up a contract. It does not provide legal advice, and using it does not create a lawyer–client relationship. For advice on your specific situation, consult a qualified lawyer.

Your document, kept private. When you open a document in Weave, it is sent to Adira to build your workspace and kept private to your session. We do not train AI models on your documents. Nothing is shared. Create a free account to save your work; otherwise it stays with your temporary session.

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