Exhibit 99.1

Media Relations Contact:	Investor Relations Contact:
Phillip Tree	Matthew Langdon
TIBCO Software Inc.	TIBCO Software Inc.
(650) 846-8529	(650) 846-5747
ptree@tibco.com	mlangdon@tibco.com

TIBCO SOFTWARE REPORTS SECOND QUARTER FINANCIAL RESULTS

Total Revenue Up 15% Year over Year

PALO ALTO, Calif., June 26, 2008 – TIBCO Software Inc. (Nasdaq: TIBX) today announced results for its second quarter, which ended on June 1, 2008.

Total revenue for the second quarter of fiscal 2008 was $150.0 million and net income was $3.5 million, or $0.02 per diluted share. This compares to total revenue of $130.5 million and net income of $9.2 million, or $0.04 per diluted share, as reported for the second quarter of fiscal 2007.

On a non-GAAP basis, net income for the second quarter of fiscal 2008 was $12.4 million or $0.07 per diluted share, compared with $14.8 million or $0.07 per diluted share for the second quarter of fiscal 2007. Non-GAAP operating income for the second quarter of fiscal 2008 was $17.5 million, as compared to non-GAAP operating income of $18.7 million in the second quarter of fiscal 2007. Non-GAAP results exclude stock-based compensation expense and amortization of acquired intangible assets, and assume a non-GAAP effective tax rate of 33% for fiscal 2008 and 37% for fiscal 2007.

“Despite weakness in the Americas business, we delivered total company revenue growth of 15% driven by a strong performance from our European Division and significant deals in key vertical markets such as Financial Services, Telecommunications, Insurance and Life Sciences,” said Vivek Ranadivé, chairman and chief executive officer, TIBCO. “We continue to see opportunity across all geographies and are confident in our market position given our unique technology and the demonstrable value we provide to our global customer base.”

Second Quarter Fiscal 2008 Highlights

• Total revenue rose 15% year over year to $150.0 million.

• License revenue rose 5% year over year to $57.7 million.

• Services and maintenance revenue rose 22% year over year to $92.3 million.

• Year-to-date, cash flow from operations exceeded $92 million versus $52.6 million for the same period last year.

• Total deferred revenue rose 43% from a year ago to $154 million.

• The number of license deals over $100,000 rose 25% from a year ago to 91, with 7 deals over $1 million.

• TIBCO expanded its business with leading companies in Q2 such as Arcos Dorados, Boehringer Ingelheim, CargoSmart Limited, E. & J. Gallo Winery, Ingram Micro, Sanofi-aventis, Santos, Telecom Italia, TrueCredit, and Vodafone The Netherlands.

Conference Call Details

TIBCO has scheduled a conference call for 4:30 pm ET / 1:30 pm PT today to discuss its second quarter results. The conference call may be accessed over the internet at www.tibco.com or via dial-in at 877-795-3649 or 719-325-4837. Please join the conference call at least 10 minutes early to register. A replay of the conference call will be available until midnight on July 26, 2008 at www.tibco.com or via dial-in at 888-203-1112 or 719-457-0820. The pass code for both the call and the replay is 4574178.

About TIBCO

TIBCO digitized Wall Street in the ‘80s with its event-driven “Information Bus” software, which helped make real-time business a strategic differentiator in the ‘90s. Today, TIBCO’s infrastructure software gives customers the ability to constantly innovate by connecting applications and data in a service-oriented architecture, streamlining activities through business process management, and giving people the information and intelligence tools they need to make faster and smarter decisions, what we call The Power of Now^® . TIBCO serves more than 3,000 customers around the world with offices in more than 20 countries and an ecosystem of over 200 partners. Learn more at www.tibco.com.

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TIBCO, The Power of Now, Spotfire 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.

About Non-GAAP Financial Information

This press release includes non-GAAP financial measures. For a description of these non-GAAP financial measures, including the reasons management uses each measure, and reconciliations of these non-GAAP financial measures to the most directly comparable financial measures prepared in accordance with Generally Accepted Accounting Principles (GAAP), please see the section entitled “About Non-GAAP Financial Measures” and the accompanying table entitled “Reconciliation of GAAP to Non-GAAP Measures.”

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. The final financial results for second quarter of fiscal year 2008 may differ materially from the preliminary results presented in this release due to factors that include, but are not limited to, risks associated with the final review of the results and preparation of financial statements. In addition, forward-looking statements are subject to risks and uncertainties that could cause actual results to differ materially from such forward-looking statements. These risks include but are not limited to: adverse changes in general economic or market conditions resulting in delays or reductions in information technology spending; successful execution of TIBCO’s business plans; and competitive factors, including but not limited to pricing pressures, industry consolidation and new product introductions. Additional information regarding potential risks is provided in TIBCO’s filings with the SEC, including its most recent Annual Report on Form 10-K for the year ended November 30, 2007 and Quarterly Report on Form 10-Q for the quarter ended March 2, 2008. TIBCO assumes no obligation to update the forward-looking statements included in this release.

TIBCO Software Inc.

Condensed Consolidated Balance Sheets

(unaudited)

(in thousands)

	June 1, 2008		November 30, 2007
ASSETS
Current assets:
Cash and cash equivalents	$	244,918	$	170,237
Short-term investments		33,230		95,534
Accounts receivable, net		113,668		161,730
Prepaid expenses and other current assets		45,243		53,540
Total current assets		437,059		481,041
Property and equipment, net		108,084		111,390
Goodwill		412,177		412,256
Acquired intangible assets, net		97,778		110,930
Long-term deferred income tax assets		42,262		35,307
Other assets		44,074		47,535
Total assets	$	1,141,434	$	1,198,459
LIABILITIES AND STOCKHOLDERS’ EQUITY
Current liabilities:
Accounts payable	$	14,739	$	12,076
Accrued liabilities		77,508		95,526
Accrued excess facilities costs		4,445		5,421
Deferred revenue		142,853		127,200
Current portion of long-term debt		1,978		1,924
Total current liabilities		241,523		242,147
Accrued excess facilities costs, less current portion		8,278		10,811
Long-term deferred revenue		10,824		14,319
Long-term deferred income tax liabilities		15,353		25,821
Long-term income tax liabilities		12,143		—
Long-term debt, less current portion		43,555		44,558
Other long-term liabilities		4,663		5,006
Total long-term liabilities		94,816		100,515
Total liabilities		336,339		342,662
Minority interest		468		401
Total stockholders’ equity		804,627		855,396
Total liabilities and stockholders’ equity	$	1,141,434	$	1,198,459

TIBCO Software Inc.

Condensed Consolidated Statements of Operations

(unaudited)

(in thousands, except net income per share)

	Three Months Ended						Six Months Ended
	June 1, 2008			June 3, 2007			June 1, 2008			June 3, 2007
Revenue:
License revenue	$	57,696		$	54,926		$	115,449		$	107,111
Service and maintenance revenue:
Service and maintenance		90,050			73,686			176,908			145,625
Reimbursable expenses		2,286			1,905			4,253			3,435
Total service and maintenance revenue		92,336			75,591			181,161			149,060
Total revenue		150,032			130,517			296,610			256,171
Cost of revenue:
License		7,484			4,730			14,764			8,801
Service and maintenance		38,088			31,756			73,858			62,584
Total cost of revenue		45,572			36,486			88,622			71,385
Gross Profit		104,460			94,031			207,988			184,786
Operating expenses:
Research and development		26,756			21,997			52,210			43,012
Sales and marketing		56,454			46,433			110,842			89,382
General and administrative		12,991			12,113			26,789			24,865
Amortization of acquired intangible assets		4,235			2,472			8,375			4,942
Total operating expenses		100,436			83,015			198,216			162,201
Income from operations		4,024			11,016			9,772			22,585
Interest income		2,244			5,716			5,502			12,106
Interest expense		(876	)		(645	)		(1,718	)		(1,013	)
Other income (expense), net		(206	)		(302	)		32			(1,567	)
Income before provision for income taxes and minority interest		5,186			15,785			13,588			32,111
Provision for income taxes		1,641			6,561			4,474			12,484
Minority interest, net of tax		52			6			107			18
Net income	$	3,493		$	9,218		$	9,007		$	19,609
Net income per share:
Basic	$	0.02		$	0.05		$	0.05		$	0.09
Diluted	$	0.02		$	0.04		$	0.05		$	0.09
Shares used to compute net income per share:
Basic		182,078			204,575			184,197			206,487
Diluted		185,990			211,885			188,028			214,097

TIBCO Software Inc.

Condensed Consolidated Statements of Cash Flows

(unaudited)

(in thousands)

	Six Months Ended
	June 1, 2008			June 3, 2007
Cash flows from operating activities:
Net income	$	9,007		$	19,609
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation of property and equipment		8,016			8,179
Amortization of acquired intangible assets		16,174			7,753
Stock-based compensation		10,361			7,697
Deferred income tax		(10,229	)		(1,769	)
Tax benefits related to stock benefit plans		4,679			6,852
Excess tax benefits from stock-based compensation		(4,580	)		(6,918	)
Minority interest, net of tax		107			18
Other non-cash adjustments, net		139			57
Changes in assets and liabilities:
Accounts receivable		47,132			33,430
Prepaid expenses and other assets		6,819			(5,496	)
Accounts payable		2,642			(2,942	)
Accrued liabilities and excess facilities costs		(9,738	)		(15,054	)
Deferred revenue		11,749			1,177
Net cash provided by operating activities		92,278			52,593
Cash flows from investing activities:
Purchases of short-term investments		(37,046	)		(131,265	)
Maturities and sales of short-term investments		99,384			353,513
Purchases of private equity investments		(25	)		(31	)
Proceeds from private equity investments		222			618
Purchases of property and equipment		(4,780	)		(6,586	)
Restricted cash pledged as security		(148	)		(37	)
Net cash provided by investing activities		57,607			216,212
Cash flows from financing activities:
Proceeds from issuance of common stock		5,885			16,513
Repurchases of the Company’s common stock		(85,645	)		(142,777	)
Excess tax benefits from stock-based compensation		4,580			6,918
Principal payments on long-term debt		(949	)		(934	)
Proceeds from minority investors		—			189
Net cash used for financing activities		(76,129	)		(120,091	)
Effect of foreign exchange rate changes on cash and cash equivalents		925			903
Net change in cash and cash equivalents		74,681			149,617
Cash and cash equivalents at beginning of period		170,237			138,912
Cash and cash equivalents at end of period	$	244,918		$	288,529

About Non-GAAP Financial Measures

TIBCO provides non-GAAP measures for operating income, net income and net income per share data as supplemental information regarding TIBCO’s business performance. TIBCO believes that these non-GAAP financial measures are useful to investors because they exclude non-operating charges. TIBCO’s management excludes these non-operating charges when it internally evaluates the performance of TIBCO’s business and makes operating decisions, including internal budgeting, performance measurement and the calculation of bonuses and discretionary compensation, because these measures provide a consistent method of comparison to historical periods. Moreover, management believes these non-GAAP measures reflect the essential revenue generation activities of TIBCO. Accordingly, management excludes gains and losses on equity investments, costs related to formal restructuring plans, stock-based compensation related to employee stock options, the amortization of acquired intangible assets and charges for acquired in-process research and development, and the income tax effects of the foregoing, as well as adjustments for the impact of changes in the valuation allowance recorded against TIBCO’s deferred tax assets when making operational decisions.

TIBCO believes that providing the non-GAAP measures that management uses to its investors is useful to investors for a number of reasons. The non-GAAP measures provide a consistent basis for investors to understand TIBCO’s financial performance on a trended basis across historical periods. In addition, it allows investors to evaluate TIBCO’s performance using the same methodology and information as that used by TIBCO’s management.

Non-GAAP measures are subject to material limitations as these measures are not in accordance with, or a substitute for, GAAP and thus TIBCO’s definition may be different from similar non-GAAP measures used by other companies and/or analysts. However, TIBCO’s management compensates for these limitations by providing the relevant disclosure of the items excluded in the calculation of non-GAAP operating income, non- GAAP net income and non-GAAP net income per share. In addition, some items such as restructuring charges that are excluded from non-GAAP net income and non-GAAP earnings per share can have a material impact on cash flows and stock compensation charges can have a significant impact on earnings. Management compensates for these limitations by evaluating the non-GAAP measure together with the most directly comparable GAAP measure. TIBCO has historically provided non-GAAP measures to the investment community as a supplement to its GAAP results, to enable investors to evaluate TIBCO’s business performance in the way that management does.

The non-GAAP adjustments, and the basis for excluding them, are outlined below:

Stock-based Compensation

TIBCO incurs stock-based compensation expense under SFAS 123(R). TIBCO excludes this item for the purposes of calculating non-GAAP operating income, non-GAAP net income and non-GAAP net income per share because it is a non-cash expense that TIBCO believes is not reflective of its business performance. The nature of the stock-based compensation expense also makes it very difficult to estimate prospectively, since the expense will vary with changes in the stock price and market conditions at the time of new grants, varying valuation methodologies, subjective assumptions and different award types, making the comparison of current results with forward-looking guidance potentially difficult for investors to interpret. The tax effects of stock-based compensation expenses may also vary significantly from period to period, without any change in underlying operational performance, thereby obscuring the underlying profitability of operations relative to prior periods (including prior periods following the adoption of SFAS 123(R)). The exclusion of stock-based compensation from the non-GAAP measures also allows a consistent comparison of TIBCO’s relative historical financial performance, since the method for accounting for stock-based compensation changed at the beginning of fiscal 2006 when TIBCO adopted SFAS 123(R). Finally, TIBCO believes that non-GAAP measures of profitability that exclude stock-based compensation are widely used by analysts and investors in the software industry.

Amortization of Intangible Assets

TIBCO has incurred amortization of intangible assets, included in its GAAP financial statements, related to various acquisitions TIBCO has made. Management excludes these items, for the purposes of calculating non- GAAP operating income, non-GAAP net income and non-GAAP net income per share. TIBCO believes that eliminating this expense from its non-GAAP measures is useful to investors, because the amortization of intangible assets can be inconsistent in amount and frequency and is significantly impacted by the timing and magnitude of TIBCO’s acquisition transactions, which also vary substantially in frequency from period to period.

The following table is a reconciliation of GAAP measures to non-GAAP for the second quarter and first half of fiscal 2008 and fiscal 2007, respectively.

TIBCO Software Inc.

Reconciliation of GAAP to Non-GAAP Measures

(unaudited)

(in thousands, except net income per share)

	Three Months Ended										Six Months Ended
	June 1, 2008					June 3, 2007					June 1, 2008					June 3, 2007
	Operating Income		Net Income			Operating Income		Net Income			Operating Income		Net Income			Operating Income		Net Income
GAAP	$	4,024	$	3,493		$	11,016	$	9,218		$	9,772	$	9,007		$	22,585	$	19,609
Amortization of intangible assets - cost of revenue		3,982		3,982			1,409		1,409			7,799		7,799			2,811		2,811
Amortization of intangible assets - operating expense		4,235		4,235			2,472		2,472			8,375		8,375			4,942		4,942
Stock-based compensation - cost of revenue		732		732			577		577			1,327		1,327			1,058		1,058
Stock-based compensation - R&D expense		1,256		1,256			925		925			2,275		2,275			1,793		1,793
Stock-based compensation - S&M expense		1,677		1,677			1,150		1,150			3,407		3,407			2,370		2,370
Stock-based compensation - G&A expense		1,546		1,546			1,109		1,109			3,352		3,352			2,476		2,476
Income tax adjustment for non-GAAP (1)				(4,502	)				(2,107	)				(8,767	)				(5,114	)
Non-GAAP	$	17,452	$	12,419		$	18,658	$	14,753		$	36,307	$	26,775		$	38,035	$	29,945
Diluted net income per share:
GAAP			$	0.02				$	0.04				$	0.05				$	0.09
Non-GAAP			$	0.07				$	0.07				$	0.14				$	0.14
Shares used to compute diluted net income per share				185,990					211,885					188,028					214,097

(1) The estimated non-GAAP effective tax rate was 33% and 37% for fiscal 2008 and 2007, respectively, and has been used to adjust the provision for income taxes for non-GAAP purposes.