Exhibit 99.1

Press Contact:	Investor Relations Contact:
Robin Stoecker	Michael Magaro
TIBCO Software Inc.	TIBCO Software Inc.
(650) 846-5044	(650) 846-5747
rstoecker@tibco.com	mmagaro@tibco.com

TIBCO SOFTWARE REPORTS

SECOND QUARTER FINANCIAL RESULTS

PALO ALTO, Calif., June 17, 2004 – TIBCO Software Inc. (Nasdaq:TIBX), a leading enabler of real-time business and the world’s largest independent business integration software company, today announced results for its second fiscal quarter ended May 30, 2004. Total revenues for the second quarter were $81.2 million. License revenues for the second quarter were $45.3 million. Net income for the quarter calculated in accordance with accounting principles generally accepted in the United States was $9.6 million or $.05 per share on a fully diluted basis.

TIBCO had non-GAAP net income for the second fiscal quarter of $11.0 million. TIBCO’s non-GAAP net income per share on a fully diluted basis was $.05 for the quarter. Non-GAAP results exclude stock-based compensation charges and amortization of acquired intangibles, and assume a non-GAAP effective tax rate of 38%.

“Increasingly, companies are turning to TIBCO to help derive value out of their existing assets, gain operational efficiencies and improve customer loyalty,” said Vivek Ranadivé, Chairman and CEO of TIBCO Software. “Our second quarter performance was punctuated by solid growth and we will continue to grow our business both organically and inorganically.”

Highlights for TIBCO’s Second Fiscal Quarter 2004

During Q2, we added 73 new customers, including companies such as H.E. Butt Grocery Company, New York Power Authority, PepsiCo, Reserve Bank of New Zealand and Wachovia Securities, among others.

In addition, we increased our business through successfully expanding the footprint of our solutions with such leading companies as Société Générale, H&R Block, Smart & Final and Wynn Resorts, just to name a few.

Second Quarter Highlights:

• Integration continues to be a primary focus area for companies as they try to leverage massive investments in CRM, ERP, and other systems, and try to orchestrate these assets. As new and existing customers find innovative ways to utilize TIBCO technology to solve business problems, TIBCO is pioneering the next stage of real-time business – Predictive Business^™. Whereas real-time business is about responding faster than competitors, springing into action to address customer needs, and capturing opportunities ahead of the competition, Predictive Business is about avoiding problems altogether, anticipating customer needs and growth opportunities, and proactively addressing them.

• As a result of re-entering the Financial Services sector with direct sales into financial services organizations, TIBCO has added 15 new financial services industry customers to our client base. In Q2, we added several new companies including Bank of America, BNP Paribas, Morgan Stanley, ISE, BPU Group and Allstate, just to name a few. These new customers come from various sectors of financial services such as retail banking, trading infrastructure, corporate and investment banking and exchanges.

• On April 22nd, we announced our offer to acquire Staffware PLC and on June 7th, we declared the transaction to be wholly unconditional and Staffware became part of TIBCO. The acquisition of Staffware by TIBCO will broaden TIBCO’s solutions for automating and integrating business processes. Together, TIBCO’s leading real-time business integration platform and Staffware’s business process management technology have the potential to provide an unparalleled solution to today’s marketplace.

Conference Call Details

TIBCO Software has scheduled a conference call for 5:00 p.m. EST today to discuss its fiscal second quarter results. The conference call will be hosted by CCBN and may be accessed over the Internet at www.tibco.com. To listen to the live call, please go to the Web site at least 15 minutes early to register, download and install any necessary audio software. For those who cannot listen to the live broadcast of the call, a replay will be available through TIBCO Software Inc.’s website at www.tibco.com shortly after the live call ends.

About TIBCO Software Inc.

TIBCO Software Inc. (NASDAQ:TIBX) is the leading independent business integration software company in the world, demonstrated by market share and analyst reports. In addition, TIBCO is a leading enabler of Real-Time Business, helping companies become more cost-effective, more agile and more efficient. TIBCO has delivered the value of Real-Time Business, what TIBCO calls The Power of Now^®, to over 2,000 customers around the world and in a wide variety of industries. For more information on TIBCO’s proven business integration, business optimization, and enterprise backbone solutions, TIBCO can be reached at +1 650-846-1000 or on the Web at www.tibco.com. TIBCO is headquartered in Palo Alto, CA.

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TIBCO, the TIBCO logo, The Power of Now and TIBCO Software are trademarks or registered trademarks of TIBCO Software Inc. in the United States and/or other countries. All other product and company names and marks mentioned in this document are the property of their respective owners and are mentioned for identification purposes only.

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Use of Non-GAAP Financial Information

TIBCO provides non-GAAP net income and non-GAAP net income per share data as additional information for its operating results. TIBCO believes that presentation of non-GAAP net income and non-GAAP net income per share data provides useful information to management and investors regarding certain additional financial and business trends relating to the company’s financial condition and results of operations. For example, the non-GAAP results are an indication of TIBCO’s baseline performance before gains, losses or other charges that are considered by management to be outside the company’s core business operational results. In addition, these adjusted non-GAAP results are among the primary indicators management uses as a basis for planning and forecasting of future periods. These measures are not in accordance with, or an alternative for, accounting principles generally accepted in the United States and may be different from non-GAAP measures used by other companies.

Legal Notice Regarding Forward-Looking Statements

This release contains forward-looking statements within the meaning of the “safe harbor” provisions of the federal securities laws. All statements other than statements of historical fact are statements that could be deemed forward-looking statements, including, without limitation, statements regarding TIBCO’s commitment to continued growth, the continued focus of companies on integration and the ability of TIBCO to provide unparalleled solutions as a result of the acquisition of Staffware. Actual results could differ materially from such forward-looking statements if demand for TIBCO’s products and services or economic conditions affecting the market for TIBCO’s products and services fluctuate, if TIBCO is unable to successfully compete with existing or new competitors, if TIBCO cannot successfully execute its growth plans or if TIBCO is unable to successfully integrate Staffware and its products. Additional information concerning factors that could cause actual results to differ materially from those

contained in the forward-looking statements set forth herein, including TIBCO’s history of losses, the unpredictability of future revenue, TIBCO’s lack of long-term customer contracts, rapid technological and market changes, risks associated with infrastructure software and the volatility of TIBCO’s stock prices are discussed more fully in TIBCO’s filings with the Securities and Exchange Commission (“SEC”), including but not limited to its most recent Annual Report on Form 10-K filed with the SEC on February 5, 2004, and reports filed after the Form 10-K. Copies of filings made with the SEC are available through the SEC’s electronic data gather analysis and retrieval system (EDGAR) at www.sec.gov. TIBCO assumes no obligation to update the forward-looking statements included in this release.

TIBCO Software Inc.

Non-GAAP Statements of Operations

Impact of Non-GAAP Adjustments on Reported Net Income

(unaudited, in thousands, except per share data)

	Three Months Ended May 30, 2004							Six Months Ended May 30, 2004
	GAAP		Adjustments*			Non-GAAP		As Reported		Adjustments*			As Adjusted
Revenue	$	81,249	$	—		$	81,249	$	155,650	$	—		$	155,650
Cost of revenue		18,419		(1,201	)		17,218		34,832		(2,406	)		32,426
Gross profit		62,830		1,201			64,031		120,818		2,406			123,224
Operating expenses:
Research and development		13,839		(7	)		13,832		26,958		(32	)		26,926
Sales and marketing		26,891		(20	)		26,871		53,527		(56	)		53,471
General and administrative		5,736		(9	)		5,727		10,542		(12	)		10,530
Amortization of intangibles		483		(483	)		—		982		(982	)		—
Total operating expenses		46,949		(519	)		46,430		92,009		(1,082	)		90,927
Income from operations		15,881		1,720			17,601		28,809		3,488			32,297
Interest and other income, net		158		—			158		1,773		—			1,773
Income before taxes		16,039		1,720			17,759		30,582		3,488			34,070
Provision for income taxes (1)		6,441		307			6,748		12,456		491			12,947
Net income	$	9,598	$	1,413		$	11,011	$	18,126	$	2,997		$	21,123
Net income per share - basic	$	0.05				$	0.06	$	0.09				$	0.10
Basic shares outstanding		198,816					198,816		204,002					204,002
Net income per share - diluted	$	0.05				$	0.05	$	0.08				$	0.10
Diluted shares outstanding		212,658					212,658		217,555					217,555

* The following table summarizes the adjustments for the respective periods presented:

	Three Months Ended May 30, 2004			Six Months Ended May 30, 2004
Net income, GAAP	$	9,598		$	18,126
Stock-based compensation		45			123
Amortization of intangibles		1,675			3,365
Provision for income taxes (1)		(307	)		(491	)
Net income, non-GAAP	$	11,011		$	21,123

(1) The projected pro forma effective tax rate for 2004 of 38% has been used to adjust the provision for income taxes for non-GAAP purposes.

TIBCO Software Inc.

Balance Sheets

(unaudited, in thousands)

	May 30, 2004			February 29, 2004			November 30, 2003
ASSETS
Current assets:
Cash and cash equivalents	$	101,254		$	86,190		$	83,278
Short-term investments		278,165			429,757			521,391
Accounts receivable, net		70,528			53,987			53,659
Accounts receivable from related parties		2,598			3,470			4,454
Cash restricted for acquisition		150,000			—			—
Other current assets		16,863			15,249			15,549
Total current assets		619,408			588,653			678,331
Property and equipment, net		115,567			116,926			119,124
Other assets		35,725			35,525			34,923
Goodwill		98,691			98,691			103,006
Acquired intangibles, net		4,510			6,184			7,875
Total assets	$	873,901		$	845,979		$	943,259
LIABILITIES AND STOCKHOLDERS’ EQUITY
Liabilities:
Accounts payable	$	3,968		$	3,482		$	3,692
Amounts due related parties		1			3			1,641
Accrued liabilities		47,280			37,884			36,219
Accrued excess facilities costs		38,509			40,471			42,522
Deferred revenue		49,458			46,251			42,914
Current portion of long term note payable		1,666			1,645			1,624
Total current liabilities		140,882			129,736			128,612
Long-term note payable		51,009			51,433			51,853
Stockholders’ equity:
Common stock		199			198			213
Additional paid-in capital		822,554			812,876			921,038
Unearned stock-based compensation		(174	)		(196	)		(254	)
Accumulated other comprehensive income		(267	)		1,832			225
Accumulated deficit		(140,302	)		(149,900	)		(158,428	)
Total stockholders’ equity		682,010			664,810			762,794
Total liabilities and stockholders’ equity	$	873,901		$	845,979		$	943,259

TIBCO Software Inc.

Statements of Operations

(unaudited, in thousands, except per share data)

	Three Months Ended May 30, 2003			Six Months Ended May 30, 2003			Three Months Ended February 29, 2004		Three Months Ended May 30, 2004			Six Months Ended May 30, 2004
License Revenue:
Non-related parties	$	27,977		$	52,762		$	36,459	$	41,261		$	77,720
Related parties		2,823			13,013			4,311		4,057			8,368
Total license revenue		30,800			65,775			40,770		45,318			86,088
Service and maintenance revenue:
Non-related parties		26,303			51,211			29,342		31,644			60,986
Related parties		3,826			7,049			3,519		3,317			6,836
Billed expenses		539			1,086			770		970			1,740
Total service and maintenance revenue		30,668			59,346			33,631		35,931			69,562
Total revenue		61,468			125,121			74,401		81,249			155,650
Cost of revenue:
Stock-based compensation		65			119			14		9			23
Other cost of revenue non-related parties		14,489			28,913			16,399		18,410			34,809
Other cost of revenue related parties		199			602			—		—			—
Gross Profit		46,715			95,487			57,988		62,830			120,818
Operating expenses:
Research and development
Stock-based compensation		148			375			25		7			32
Other research and development		17,119			34,395			13,094		13,832			26,926
Sales and marketing
Stock-based compensation		100			137			36		20			56
Other sales and marketing		29,099			55,948			26,600		26,871			53,471
General and administrative
Stock-based compensation		18			57			3		9			12
Other general and administrative		5,728			10,753			4,803		5,727			10,530
Restructuring charges		—			1,100			—		—			—
Amortization of acquired intangibles		499			998			499		483			982
Total operating expenses		52,711			103,763			45,060		46,949			92,009
Income (loss) from operations		(5,996	)		(8,276	)		12,928		15,881			28,809
Interest and other income, net		4,092			8,733			1,172		721			1,893
Realized gain (loss) on investments		900			1,362			443		(563	)		(120	)
Net income (loss) before income taxes		(1,004	)		1,819			14,543		16,039			30,582
Provision for (benefit from) income taxes		(444	)		718			6,015		6,441			12,456
Net income (loss)	$	(560	)	$	1,101		$	8,528	$	9,598		$	18,126
Net income per share - basic	$	(0.00	)	$	0.01		$	0.04	$	0.05		$	0.09
Shares used to compute net income per share - basic		211,213			210,718			209,188		198,816			204,002
Net income per share - diluted	$	(0.00	)	$	0.01		$	0.04	$	0.05		$	0.08
Shares used to compute net income per share - diluted		211,213			218,646			222,452		212,658			217,555

TIBCO Software Inc.

Statements of Cash Flows

(unaudited, in thousands)

	Six Months Ended
	May 30, 2003			May 30, 2004
Cash flows from operating activities:
Net income	$	1,101		$	18,126
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization		7,249			6,300
Amortization of acquired intangibles		3,382			3,365
Amortization of stock-based compensation		688			117
Realized gain (loss) on investments, net		(1,362	)		119
Acquisition and stock option related tax benefits		—			9,131
Changes in assets and liabilities:
Accounts receivable		11,196			(16,869	)
Due from related parties, net		(3,368	)		216
Other assets		(1,484	)		(1,440	)
Accounts payable		(894	)		276
Accrued liabilities and excess facilities		(9,447	)		7,126
Deferred revenue		(1,858	)		6,544
Net cash provided by operating activities		5,203			33,011
Cash flows from investing activities:
Purchases of short-term investments		(441,098	)		(390,339	)
Sales and maturities of short-term investments		492,614			632,637
Purchases of property and equipment, net		(974	)		(2,743	)
Cash and short-term investments pledged as security		—			(150,748	)
Purchases of private equity investments		—			(121	)
Net cash provided by investing activities		50,542			88,686
Cash flows from financing activities:
Proceeds from exercise of stock options		596			9,236
Proceeds from employee stock purchase program		2,783			2,423
Payment for repurchase and retirement of common shares		—			(115,000	)
Principal payments on long term debt		—			(802	)
Net cash provided by (used for) financing activities		3,379			(104,143	)
Effect of exchange rate changes on cash		(7	)		422
Net change in cash and cash equivalents		59,117			17,976
Cash and cash equivalents at beginning of period		57,229			83,278
Cash and cash equivalents at end of period	$	116,346		$	101,254